What Is Perfluorononylethyl Carboxydecyl Lauryl Dimethicone?
Perfluorononylethyl Carboxydecyl Lauryl Dimethicone is a specialty silicone that has been modified with perfluorinated and fatty segments. On a chemical level it combines a dimethicone backbone with long fluoroalkyl and lauryl chains, creating a hybrid molecule that behaves like both a lightweight oil and a water-repelling film. Manufacturers start with medical grade dimethicone, then graft on the fluoro groups and fatty alcohols through controlled reactions in closed reactors. This process yields a silky fluid that spreads easily and resists breaking down in water.
The ingredient first appeared in high end skincare in the early 2000s when formulators wanted silicones that could give classic slip but also last longer on skin. Its unique mix of silicone smoothness and fluorocarbon durability quickly made it popular in primers, long wear foundations, moisturizers, sunscreens, anti-aging serums, sheet masks and hair smoothing creams. Because it is clear odorless and stable over a wide pH range it fits well into both water-in-oil and oil-in-water emulsions.
Perfluorononylethyl Carboxydecyl Lauryl Dimethicone’s Cosmetic Benefits/Uses
This ingredient is prized for its skin conditioning action. It forms an invisible, breathable layer that locks in moisture, leaving skin feeling soft and velvety without a greasy after-feel. The fluoro segments boost water resistance so the conditioning effect lasts through humidity and light perspiration, helping makeup stay fresh and moisturizers stay effective for longer periods.
Who Can Use Perfluorononylethyl Carboxydecyl Lauryl Dimethicone
This silky silicone suits most skin types, including dry, normal, combination and oily complexions. Its lightweight feel and non occlusive film make it comfortable even for those prone to congestion. Sensitive skin usually tolerates it well because the molecule is inert and fragrance free, though anyone with a known silicone sensitivity should approach with caution.
The ingredient is fully synthetic and contains no animal derived components, so products that rely on it are typically appropriate for vegans and vegetarians. Still, final formulations may include other additives so ethical shoppers should check the full ingredient list and the brand’s cruelty free policy.
No data suggest unique risks for pregnant or breastfeeding women when this ingredient is applied topically in cosmetic concentrations. It does not penetrate deeply or enter systemic circulation in meaningful amounts. This is not medical advice and expectant or nursing mothers should run any skincare product past their doctor to be on the safe side.
Perfluorononylethyl Carboxydecyl Lauryl Dimethicone does not cause photosensitivity and does not interact with UV filters, so it will not make skin more prone to sunburn. It is also odorless and non staining, making it compatible with both day and night routines without altering fragrance or color profiles in a formula.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical application of Perfluorononylethyl Carboxydecyl Lauryl Dimethicone can vary from person to person. The following is a list of potential side effects, yet they are uncommon when the ingredient is used correctly in well formulated products.
- Mild transient redness or warmth – usually subsides quickly as the skin adjusts to the product
- Temporary stinging on very compromised or freshly exfoliated skin
- Rare allergic contact dermatitis in individuals sensitive to silicones
- Build up on hair shafts leading to dullness if used heavily in leave in hair products
If any persistent irritation or discomfort develops discontinue use and consult a healthcare professional.
Comedogenic Rating
Rating: 1 out of 5. Perfluorononylethyl Carboxydecyl Lauryl Dimethicone sits on the surface of skin and forms a light breathable film that does not clog pores in most people. Its large silicone-based structure is too big to sink into follicles where blockages start. The added fluoro segments make it even more slippery and less likely to pile up. Because the molecule repels both water and oil it tends to rinse away cleanly with a regular cleanser instead of sticking to skin. For these reasons it is generally considered suitable for those prone to acne or breakouts.
As with any ingredient, overall pore friendliness also depends on the entire formula and how thoroughly it is removed at the end of the day. Heavy layers combined with rich waxes or insufficient cleansing could still leave residue that might trap debris.
Summary
Perfluorononylethyl Carboxydecyl Lauryl Dimethicone is a hybrid silicone that conditions skin by leaving a thin flexible barrier that locks in moisture yet remains light to the touch. The silicone backbone provides slip and softness while the attached fluoro and fatty chains boost water resistance so the feel and finish last longer than standard dimethicone.
It appears in primers, long wear foundations, sunscreens and smoothing serums but is still more of a niche helper than a mainstream star. Brands that focus on high performance or luxury textures reach for it most often.
Safety data show low irritation potential and minimal absorption, making it a low risk choice for daily use on face body and hair. Still, skin is personal so it is wise to patch test any new product that contains this or any other unfamiliar ingredient.