Barrier

Cholesterol

The indispensable lipid of the skin — cholesterol makes up ~25% of the lipids in the stratum corneum and is an essential partner of ceramides. Without sufficient cholesterol, the barrier cannot be fully restored, even with the use of ceramides.

Barrier lipidsProtectionHydrationRestoration

✓ Safe

Comedogenic Rating

0/5

Irritation Potential

0/5

What is it?

Cholesterol (INCI: Cholesterol) — a sterol found in every cell of the body and makes up ~25% of the lipids in the stratum corneum (along with ceramides ~50% and free fatty acids ~15–20%). It is synthesized in the skin from the mevalonate pathway in keratinocytes. It organizes the lamellar lipid structure between corneocytes together with ceramides — forming a "liquid crystalline cement." In cosmetics — from lanolin (animal) or synthetic (vegan).

A key component of barrier creams along with ceramides. Especially important for mature skin (cholesterol synthesis decreases with age) and atopic dermatitis. The optimal ratio of ceramides:cholesterol:fatty acids = 1:1:1 (CeraVe principle).

Key Benefits

✦

Restoration of the lipid barrier in a trio with ceramides

Cholesterol, ceramides, and fatty acids together form a lamellar structure of the stratum corneum. The absence of any component disrupts the organization of the lipid bilayer. Research by Elias et al.: the use of only ceramides or only cholesterol — partial restoration. Only the correct ratio of the three — complete restoration of TEWL.

◈

Critical for mature skin

With age, cholesterol synthesis in the skin decreases more significantly than ceramides — age-related dry skin is partly associated with cholesterol deficiency. Topical application compensates for the deficiency and accelerates barrier recovery after stress. For 50+ — cholesterol in the cream is more important than at a younger age.

✧

Acceleration of recovery after barrier damage

When the barrier is damaged (soap, solvents, aggressive peels), the skin restores lipids in a certain sequence. Adding topical cholesterol accelerates this process. In atopic dermatitis, cholesterol deficiency is documented — products with a trio of lipids are more effective than ceramide-only formulas.

Suitable for

Mature skinAtopic skinDry skinDamaged skin

Main Actions

✓ Restoration of the lipid barrier✓ Decrease in TEWL✓ Hydration

Vegan vs animal cholesterol

Traditional cosmetic cholesterol — from lanolin (sheep wool). Vegan — synthetic or from microbial fermentation. Chemically identical. If vegan product is important — look for the label vegan or synthetic cholesterol.

CategoryBarrier Repair

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