Cyclopentasiloxane is one of the foremost common ingredients utilized in skin and in hair care products today. Synthetically manufactured, it’s a silicone derivative that carries a spread of skin and hair applications, like toiletry and sunscreens. This action of evaporation makes it a superb carrier ingredient.

What is Cyclopentasiloxane?

:diamond_shape_with_a_dot_inside:Cyclopentasiloxane is a form of silicone and is used in hundreds of cosmetics. The topic of silicones in your products is a highly debated one because there was controversy about its potential health. But the Cosmetic Ingredient Review Expert Panel proved that Cyclopentasiloxane is safe to use in cosmetics.

:diamond_shape_with_a_dot_inside:Cyclopentasiloxane in effect is a type of silicone. D5 is another commonly used name of Cyclopentasiloxane. D5 is odorless, colorless, non-greasy, and water-thin and It gives products a silky texture and seals hydration. It has the ability to dissolves heavier ingredients. This property makes Cyclopentasiloxane a useful ingredient in cosmetic products and in hair products.

:diamond_shape_with_a_dot_inside:D5 is safe to use on a daily basis in cosmetics or in hair products. It’s also used as a lubricant and emollient because it helps the skin and hair absorb heavier, larger relative molecular mass ingredients.

Cyclopentasiloxane v/s Dimethicone

  • Cyclopentasiloxane is different from another siloxane known as dimethicone or PDMS. Dimethicone copolyol may be a water-soluble sort of silicone, dimethicone is safe when used in cosmetic products because it dissolves in water and washes out easily. For this reason, it’s considered lightweight and doesn’t contribute to creating up.

  • A very serious allergic reaction to dimethicone drug is rare. But rash, itching, and swelling are less common symptoms related to this drug.

How much of Cyclopentasiloxane found in personal care products?

:diamond_shape_with_a_dot_inside:Since these substances are often utilized in both small also as in large quantities, different doses are often found in several products.

:diamond_shape_with_a_dot_inside:In hand and body moisturizers as an example, Cyclopentasiloxane is often found in concentrations of 0.1%. This much is enough to make a sense of softness and smoothness within the person’s skin. If on the opposite hand, we take a glance at the products containing the most important doses of Cyclopentasiloxane, we’ll find antiperspirants or in hair deep-conditioning products, like masks.

:diamond_shape_with_a_dot_inside:Finally, its compatibility with most other chemical substances makes it a fine match for ethanol, butylene glycol, mineral oils (essential oils), and fatty acids. Therefore, its presence in eyeliners, mascara, eye-contour creams, and foundations is nearly inevitable

How Cyclopentasiloxane is made?

  • Commercially D5 is produced from dimethyldichlorosilane. Hydrolysis of the dichloride produces a mix of cyclic dimethylsiloxanes and polydimethylsiloxane. From this mixture, the cyclic siloxanes including D5 are often removed by distillation. within the presence of a robust base like KOH, the polymer/ring mixture is equilibrated, allowing complete conversion to the more volatile cyclic siloxanes.

What is Cyclopentasiloxane used for?

Cyclopentasiloxane for the skin:

  • D5 is known for its slippery glide as they repel water and glide easily. Cyclopentasiloxane gives products a silky smooth texture this is why they are commonly used as ingredients in lubricants and also they leave a non-greasy finish.

  • Cyclomethicone may be a volatile silicone that provides smooth slippery touch to skincare products, improves their soft texture. It’s safe to use and doesn’t clog pores.

  • Silicone moisturizes the skin and treats the wrinkles by drawing the skin’s natural moisture to the skin surface. By using silicone, wrinkles are simply treated, as silicon simply hydrating and improving the Collagen structure. Prolonged use helps return skin to a younger and supple appearance by softening fine lines and wrinkles.

Here we are sharing top ingredients of silicon-based shaving gel. :point_down:

Here we are sharing top ingredients of silicon-based Deo Spray. :point_down:

Cyclopentasiloxane for the hair:

  • You may remember the utilization of silicones in hair care products. they assist to lock in moisture by forming a protective barrier over the hair shaft. you would possibly have also heard of certain big-name shampoos and deep conditioners containing silicone, that coat the hair. This has the advantage of making the hair feel soft and glossy.

Here we are sharing top ingredients of Deep conditioner. :point_down:

Benefits of Cyclopentasiloxane:

  • Cyclopentasiloxane containing products are cheaper than other similar silicones cosmetic and hair products that help lower the cost of your favorite products.

  • Cyclopentasiloxane forms seal hydration on the skin by form a protective barrier on the skin and hair. From their molecular structure, the barrier they form is permeable, preventing the skin from suffocating and dehydration.

  • D5 can be found in a wide range of personal skin and in hair care products: hair spray, Sunscreen, antiperspirant, deodorant, hair conditioner, shampoo, hair detangling products, waterproof mascara, foundation, eyeliner, concealer, moisturizer with SPF, eye shadow, hair styling gel and lotion, and lipstick.

  • Silicones are heavy, but this one is particularly lightweight and can help you detangle your hair to reduce frizz, and prevent breakage.

Side Effects of Cyclopentasiloxane:

:green_circle: Cyclopentasiloxane/D5 has no known for side effects.

  • Cyclopentasiloxane is not shown to cause irritation, sensitization or allergy. On other hand, it may even prevent irritation and sensitization in patients with skin conditions like rosacea.

  • According to some people Cyclopentasiloxane can be considered an endocrine disrupter. Cyclopentasiloxane can disturb the normal functioning of your hormones. But in 2012 a group of researchers confirmed that D5 isn’t absorbed into the skin and there was minimal percutaneous absorption. A 2016 study confirmed that Cyclopentasiloxane evaporates before any significant absorption. On the opposite side, Dimethicone is a siloxane, which is an endocrine disruptor, and dimethicone can impair fertility. Dimethicone has been linked to uterine cancer.

  • D5 with skin-penetrating elements like alcohol would, in turn, drive the silicone deeper into the skin but it quickly exhaled or broken down and excreted in the urine. Accumulation of Cyclopentasiloxane chemical in the body is unlikely. So, you can use Cyclopentasiloxane containing cosmetic and hair products during pregnancy. Cyclopentasiloxane isn’t harmful to you when you are pregnant.

Is Cyclopentasiloxane good for hair?

:diamond_shape_with_a_dot_inside:Yes! Silicone coats the hair strands to scale back and “smooth” frizz, gives hair a glass-like shine, and protects against moisture loss. Hence Cyclopentasiloxane is also good for curly hairs. Silicone also expands when heated by thermal appliance or any other thermal treatment, so can make the hair appear thicker. Unfortunately, long-term use of silicone-based shampoos and conditioners could leave your hair in distress and rough.

:diamond_shape_with_a_dot_inside:Silicones in shampoo provide a water-proof barrier over your hair. This is often most beneficial to people with high porosity because it helps them retain moisture which successively allows them to possess moisturized hair for extended periods of your time. It does this by filling within the “gaps” that cause hair to be high porosity in the first place.

Here we are sharing top ingredients of silicon- based shampoo. :point_down:
Cyclopentasiloxane for black hair

Summary: :point_down:
:diamond_shape_with_a_dot_inside: Cyclopentasiloxane has Emollient, lubricating, and solvent properties. It gives products a silky texture and seals hydration and also D5 gives a slippery and silky feeling when applied to the skin and hair . Plus it helps to offer products a smooth, silky feel. Also referred to as decamethylcyclopentasiloxane, thankfully, it’s often mentioned as simply, D5. It’s colorless, odorless, and is usually found in liquid form.

Is Dimethicone good for curly hair?

:diamond_shape_with_a_dot_inside: :diamond_shape_with_a_dot_inside:Many of us teach that silicones build up even just after a couple of uses, which they build up such a lot over time that they eventually block moisture from being absorbed by the hair, and hair will become brittle and lifeless.

:diamond_shape_with_a_dot_inside: :diamond_shape_with_a_dot_inside:Dimethicone may be a very fashionable silicone found in a lot of hair products. Dimethicone helps products to become easily spreadable as same as done by cyclopentasiloxane. This silicone isn’t water-soluble, meaning water alone isn’t enough to rid it from the hair.

How to get rid of silicon from hair?

:diamond_shape_with_a_dot_inside: Apple vinegar: While there’s some evidence that apple vinegar (ACV) rinse can help remove non-heavy product build-up from silicones, the simplest thanks to tackling it’s to use gentle silicone-free clarifying shampoo. Use it only a couple of times a month – vary counting on the heaviness of your silicone-product usage

:diamond_shape_with_a_dot_inside: Baking soda: also useless. Olive oil, spread, and other oily kitchen substances: unlikely to assist. Natural oils don’t mix well with silicones. Mineral spirits: “Now that might actually work,” he said, but acknowledged that it isn’t really safe to place on your skin.

:diamond_shape_with_a_dot_inside: Clarifying shampoos: Clarifying shampoos can contain sulfates like Sodium Laureth/lauryl sulfate so as to get rid of the buildup of ingredients like silicones from the hair, but they do not need to.

:diamond_shape_with_a_dot_inside: Micellar water: It certainly seems counterintuitive to believe water to get rid of makeup — which frequently contains silicones, oils, and other non-water soluble substances — but micellar water is quite the thing in your tap. … So micellar water has its limitations, but that does not mean that it is not an excellent addition to your kit.

Is Cyclopentasiloxane good for acne?

:diamond_shape_with_a_dot_inside: :diamond_shape_with_a_dot_inside:There are countless different types of silicones in cosmetics but the foremost common is Cyclopentasiloxane and dimethicone. A number of these claims include that silicones clog pores, can cause acne, cause dull and dehydrated skin, and even affect the skin cells’ natural regeneration process.

:diamond_shape_with_a_dot_inside: :diamond_shape_with_a_dot_inside:Silicone is tough to urge off and may build abreast of your skin, resulting in acne. It can especially cause irritations for people that have sensitive skin and cause your skin to become even more sensitive.

:diamond_shape_with_a_dot_inside: :diamond_shape_with_a_dot_inside:It seems there is a downside to silicone’s occlusive abilities. Sure, they keep environmental aggressors out, because they are known for some not-so-great substances. “For acne-prone patients, silicones can act as a ‘barrier’ and trap oil, dirt, and dead skin cells, making acne worse. Remember Butylene Glycol can be counted among the different ways to get rid of acne scars.

Is Cyclopentasiloxane is safe?

Environmental hazards

:diamond_shape_with_a_dot_inside:The environmental impacts of D5 and D4 have attracted attention because these compounds are pervasive. Cyclic siloxanes are detected in some species of aquatic life.

:diamond_shape_with_a_dot_inside:A scientific study in Canada has declared that “Siloxane D5 doesn’t pose a danger to the environment. And a scientific assessment of D5 by the Australian government stated:

:green_circle:The direct risks to aquatic life from exposure to those chemicals at expected surface water concentrations aren’t likely to be significant.

:diamond_shape_with_a_dot_inside:However, within the European Union, D5 was characterized as a substance of very high concern (SVHC) thanks to its PBT and PvB properties and was thus included within the candidate list for authorization.

:diamond_shape_with_a_dot_inside:Since 31 January 2020, D5 can’t be placed on the market within the European Union in wash-off cosmetic products during a concentration adequate to or greater than 0.1 % by weight.

The Bottom Line

  • The compound is assessed as a Cyclomethicone. Such fluids are commonly utilized in cosmetics, like deodorants, sunblocks, hair sprays, and skincare products.

  • It’s becoming more common in hair conditioners because it makes the hair easier to brush without breakage.

  • It’s also used as a part of silicone-based personal lubricants. D5 is taken into account as an emollient.

  • In Canada, among the quantity utilized in consumer products approximately 70% were for antiperspirants and 20% for hair care products.10,000–100,000 tonnes per annum of D5 is manufactured and or imported within the European Economic Area.

  • Atmospheric emissions of D5 within the hemisphere were estimated to 30,000 tonnes per annum.


Frequently Asked Qusetions:

People are also wondering about following queries:

1- Is silicone bad for 4c hair?

That’s right, using silicone-based products and thus having to get rid of them with a sulfate will dry out your hair and cause more split ends than would naturally occur. Type 4 hair is already very delicate and by adding this extra stress to your coils, you’ll only shrink them even further.

2- Does Tepezcohuite used for wound healing?

Tepezohuite is known for its antibacterial activity and has been used for wound healing for years .

3- What is jessner peel?

A Jessner peel may be a medium chemical peel that exfoliates the skin’s outer layer called epidermis to make a smoother, clear, fresher appearance, with improved skin tone and skin texture. It’s done to treat acne scars, reduce fine lines,forehead lines and wrinkles, fade dark spots of hyperpigmentation and acne, and minimize the looks of acne scars.


Is Cyclopentasiloxane a silicone?

:diamond_shape_with_a_dot_inside:Cyclopentasiloxane is one among many sorts of silicones. Generally, silicones are known for their ability to lubricate, waterproof and supply shine. There are many sorts of silicones – some have a really heavy, sticky consistency and are very lightweight.

:diamond_shape_with_a_dot_inside:Cyclopentasiloxane has no side effects. It does not cause any irritation and allergy. Cyclopentasiloxane is water soluble and beneficial ingredient used in both skin and in hair care products.

Cyclopentasiloxane is commonly used in cosmetics. The long name may be time taking and frustrating to pronounce but you can also ain’t call it D5. There was a controversy in the past that use of this chemical in cosmetics is detrimental to both the skin and environment but recent studies have cleared it determining it safe for both. Still in 2018 it’s use was restricted to 0.1% in Europe. This was in washed off products because the residue was said to be accumulating in water. This is why the concentration was supposed to be 0.1% because above that water would get contaminated.

What is this chemical Cyclopentasiloxane

Cyclopentasiloxane is a derivative of silicon which is commonly used in windshields, lubricants, sealants, medical implants and yes in cosmetics. It is water thin, odourless, and colourless, non greasy. It evporatesvfrom the skin quickly and doesn’t get absorbed. This makes it useful in the cosmetics in which getting dry quiklybis required like in hairspray and antiperspirants. The lubricating properties of this chemical helps in the product to spread easily giving a silky and slippery look.

Uses of Cyclopentasiloxane

The lubricating property of D5 helps it being a common ingredient in sealants and lubricating. In this way the compounds repel water and spread easily. The quality of being water repellent helps in cosmetics in alot of ways. For example in hairspray this compund will help in reducing frizz, preventing breakage and detangling the hair by making a protective coating on the surface. So these attributes help it becoming part of the personal care products like


Hair lotion or gel

Eye shadow

Moisturizer with SPF




Water proof mascara

Products to detangle hair.







If you will see the label of these products to find the name of Cyclopentasiloxane. It can be written as coming under the cyclomethicone named as decamethylcyclopentasiloxane (D5). It is not like the other silixane like polydimethylsiloxane PDMS or dimethicone.


The safety of Cyclopentasiloxane is still question able. It’s use in such wide variety of cosmetics I’d die to the reason that it is cheap. Obviously there is a greater incentive for the manufacturers rather caring for the environment or your health. The safety of the compound is associated with the level of concentrations being used. The permitted level of concentrations do not pose any danger either to environment or the health. Used in higher concentrations than allowed will lead to effecting the hormone by disturbing the endocrine.

However that is also not a point of concern because to disrupt the endocrine the product has to go into the body. The property of Cyclopentasiloxane to evaporate as soon as it contacts the skin and inability to get into the skin makes it impossible to enter the body in the first place. In case something with D5 is inhaled then it will be excreated in urine after breakdown or more likely exhaled quickly. So chances of getting inside the body are thin. The aim.if using this compound was not to cause irritation on skin rather it is said by experts that the skin problem rosacea causes irritation which can be settled by Cyclopentasiloxane in products.

Hazards to environment

The chemicals used in the products either for hair or skin have an impact on the environment as well. They don’t stay on the derma forever rather they have to be washed off as well. When this happens the chemicals get mixed up in water having consequences on water life. Same us the concern for Cyclopentasiloxane. That means this is also claimed to be effecting the wildlife after making its way to water. When the debate if it’s hazards were on, Canada took the initiate to conduct research work on it to find the potential dangers to environment. Finally in 2011 they come to a conclusion that this compind poses no threat to environmental organisms since none of the travmce was found in any creature. This rendered it safe in use. The use was safe pertaining to it’s quality of evaporating after use. There was a very little amoniy that was washed off in water and going of that amount in any of organism was negligible when it came to harming them. Still Europe restricted it’s use 0.1% to avoid any kind of damage to environment what so ever.


Cyclopentasiloxane is one compound commonly used in the products so you can be awry of the fact that it causes any harm to health or environment. It gives your hair the silky look and helps products in spreading. Since it does not absorb in the body so it’s consequences on health are negligible. You can use the products safely. The good thing is that the minimal effect it has on the environment is taken care of by restricting it’s use till 0.1%. The limited use will not only help in getting equal benefits from the product but also help in keeping the environment safe.

There are many chemicals around which have damaged the earth beyond repair. When we see that authorities are concerned about the effects on environment that is leading to effect human health is commemorating. The same effort should be out by everyone one earth because we are all indebted to nature for it’s blessings and the protection it provided us. Limited use of Cyclopentasiloxane is one example. There are more examples being set every day but that is not enough until we a play our important role in protecting the earth.

It starts from minimizing the use of products that is detrimental to environment. Keeping our lifestyle simple and using the conventional method that do not add on to the carbon footprint. Let’s start from minimal use of one time used plastics like plastic bags. Trying to use modes of transport that emits less of carbon. Planting more trees is not only fun but the remedy to heal the earth. Let’s begin today and make this world a better place for us and the generations to come.

Cyclopentasiloxane is a lubricant, solvent and emollient which belongs to the silicone family named cyclomethicones. Cyclopentasiloxane is also known as decamethylcyclopentasiloxane; abbreviated as D5 in short form. Cyclopentasiloxane has a cyclic structure and contains units of oxygen and silicone in a closed loop form. D5 is a fragrance free, uncolored liquid that possesses a number of usage characteristics in daily life. Cyclopentasiloxane is used in skin care products, cosmetic products, lubricants, deodorants, sunblocks, hair sprays, hair gels, antiperspirants, shampoos, hair detangling products, conditioners and moisturizers.

Chemical Characteristics of D5:

Some of the important chemical characteristics of cyclopentasiloxane are highlighted below:

Chemical Characteristic Measurement in Celsius
Melting Point -38°
Boiling Point 211°
Evaporation Heat Point 51.4°
Water Solubility Forms heterogeneous mixture
Storage Temperature Store below +30°
Chemical’s Textural Form Liquid
Stability Not compatible with strong oxidizing agents

Physical Characteristics of D5:

The physical traits of cyclopentasiloxane make it a very useful component in the production of various products.

  • Dissolving Agent/Solvent: Cyclopentasiloxane helps in dissolving other dense components in a mixture which makes the texture of the mixture smooth and more even to apply on the desired surface. This physical characteristic makes D5 a solvent that essentially is a liquid substance that dissolves other substances to make a coherent large compound mixture.
  • Evaporation makes it Safe: D5 doesn’t get absorbed within skin layers. It evaporates quickly into the air which makes the probability of any side effects of silicone based molecule to almost non-existent.

Products Having D5 Component:

Few most famous products possessing cyclopentasiloxane are listed below.

Skin Care Products:

  • Essense Rooibos Miracle Tissue Oil Essence.
  • Anti-Aging Serum and Anti- Wrinkle eye cream by Argani Care.
  • Family Sun Fluid SPF 50+ / PA ++++ by CharmZone.
  • Diadermine Laboratories Lift + Sofort-Effeckt Kapseln.
  • Gel De Seda by Formula Dra Norma Bostos.
  • G.M. Collin Daily Ceramide Comfort (Serum Capsules).
  • Hidrabene Serum Concentrado.
  • LDA Derm’s Revit.
  • MD Skinical Ceramide Repair.
  • Make Prem UV Defense Calamine Sun Milk.
  • Platinum High Octane Vitamin C Serum.
  • R Essentials Hyaluron-A Eye Repair Serum.
  • Revolution Skincare Oil Priming Serum.
  • Rosken Skin Repair Bio Serum.
  • SeneGence Eyecreme.


  • Rosy Tone-Up Mineral Sunscreen SPF 50+ PA ++++ by Keenoniks.
  • Sports Beauty Sun Protect by Kose.
  • Kose Suncut Pro Defense Sunscreen.
  • Parasol One Application A Day Sun Care.
  • Sendayu Tinggi UV Defense Cream Matte Sunscreen.
  • Sekkisei Skincare UV Stick.
  • Missha Safe Block.
  • Dr. Different Double Defense Sunblock and Sunscreen.
  • Abib Mild Sunblock Protection Tube.
  • Cosrx Shield Fit All Green Comfort Sun.
  • Dr. G Green Mild Up Sun.
  • Isntree Sensitive Balancing Sun Protection.
  • Yadah Oh My Sun Protection Tone Up Base.

Cosmetic Products:

  • Clarins Instant Eye Makeup Remover.
  • Sports Beauty Facial BB by Kose.
  • Miss Rose Makeup Remover.
  • Max Factor Lasting Performance Foundation.
  • Missha M Perfect Covering BB Cream.
  • Revlon Colorstay Concealer.
  • Ruby Rose Matte Foundation.
  • Designer Brands Blur Primer.
  • Delilah Time Frame Future Resist Foundation.
  • Skoah Klean Slate Make Up Remover.
  • Hada Labo Air BB Cream.
  • Secret Key Finish Up BB Cream.
  • Young Blood Liquid Mineral Foundation.

Hair Care Products:

  • Insight Liquid Crystals for Hair.
  • KeraCare Silken Seal.
  • LDA Derm’s Q10 Gel.
  • Dherma Science Treatment Oil by Lidherma.
  • MorocconOil Hair Treatment.
  • St. Botanica Moroccon Argan Hair Serum.
  • Aquage Beyond Shine Mist.
  • Indola Hydrate Spray Conditioner.
  • Schwarzkopf Gliss Conditioner Spray Long and Sublime.
  • Natur Vital Hair Mask.
  • Lador Tea Tree Scalp Clinic Hair Pack.
  • Argan Oil Hydrating Hair Mask.
  • XPel Macadamia Oil Extract Hair Treatment.


Cyclopentasiloxane is a silicone type also known as D5 possessing numerous usage characteristics and being used enormously in various skin-care products, hair products, lubricants, antiperspirants, coatings and cosmetic products. D5 is also safe to use according to various statistical and experimental findings.

Frequently Asked Questions:

1) Is cyclopentasiloxane a silicone?

Yes, cyclopentasiloxane is a silicone type belonging to cyclomethicones which is an aggregation of a four to seven cyclic structured silicone molecules.

2) Is cyclopentasiloxane dangerous?

Experiments have proved that D5 is safe to incorporate in various products with no to minimal danger implications. Appropriate consumption level of cyclopentasiloxane is considered to be 0.1%. Also, D5 does not absorb into skin rather it evaporates into air which also makes it safe to use.

3) Does cyclopentasiloxane clog pores?

Cyclopentasiloxane do not clog or block pores like any other type of silicone element. Moreover, D5 do not penetrate deep within skin pores because of its evaporative characteristic. This also results in not making clogged pores.

4) Is cyclopentasiloxane bad for hair?

No side effects of D5 are observed till date. Cyclopentasiloxane helps in detangling of hair, brings shine and also smoothers hair strands. This component is suitable for both curly and normal straight hair. However, this is recommended that products containing any silicone based element should be used with intervals in between usage time and prolonged usage period should be avoided.

5) Is cyclopentasiloxane safe for skin use?

D5 is used in a large number of serums, moisturizers, lotions, sunscreens and sunblocks. Cyclopentasiloxane helps in even distribution of the mixture over the skin, protects skin from loss of moisture and prevent bacteria and other allergies to attack on the skin. D5 is suitable for all skin types except the skins experiencing any allergic problems like acne, eczema, hives, peeling skin syndrome, to name a few. In such instances, asking doctor’s opinion is important before making use of the product.

6) Is cyclomethicones the same as dimethicone?

Both are types of silicones with the only difference that cyclomethicones evaporates while dimethicone does not evaporate and is water soluble.