C30-45 Alkyl Methicone
A waxy silicone. It gives a water-resistant film and dense texture, common in sticks and SPF. Well tolerated.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
C30-45 Alkyl Methicone is a long-chain, wax-like silicone, so at room temperature it sits as a solid. In a formula it works as a film former and oil-phase thickener: it lays down a water-resistant film, gives body to solid sticks and extends the wear of sunscreens. This is a functional ingredient, not a skincare active. It does not fix wrinkles or pigmentation; its job is texture, fixation and resistance to sweat and water. That role is well documented in cosmetic formulation. Applied topically it has no meaningful systemic absorption, so it can be used during pregnancy and breastfeeding without special restriction. Tolerance is high: low irritation and allergy potential, suitable for sensitive skin. Silicones of this type do not clog pores on their own, though on very oily skin a dense film can feel heavy.
Frequently asked questions
Is C30-45 Alkyl Methicone safe during pregnancy?
C30-45 Alkyl Methicone is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is C30-45 Alkyl Methicone for?
C30-45 Alkyl Methicone suits: normal, dry, combination, oily, sensitive.
What is C30-45 Alkyl Methicone and what does it do in cosmetics?
A waxy silicone.
What's the INCI name for C30-45 Alkyl Methicone?
The INCI name is C30-45 Alkyl Methicone.
See C30-45 Alkyl Methicone in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Similar role in the formula
Other functional ingredients
C30-45 Olefin, Caesalpinia Spinosa Gum, Calcium Carbonate, Calcium Chloride, Ethoxydiglycol, Octyldodecanol, Polysorbate 20, Stearyl Alcohol
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