- Origin
Endogenous; synthesized or plant-derived for cosmetics
- Format
Cream, stick, serum
- Best time
Morning and evening
What it is
Ceramides make up roughly half of the lipids in the outer skin barrier — the cement between corneocytes that keeps water in and irritants out.
How it works
Bio-identical ceramides incorporate into the lamellar structure of the stratum corneum and restore barrier function — measurable within weeks of consistent use.
The protocol
Apply morning and evening, ideally with cholesterol and free fatty acids in a 3:1:1 ratio for true barrier replication.
Sourcing
Look for multi-ceramide complexes (Ceramide NP, AP, EOP) ideally with cholesterol and fatty acids.
Honest caution
Among the safest topical ingredients. Suitable for sensitive and reactive skin.
What it supports
- Barrier restoration — Replenishes the lipids that hold the barrier together.
- Hydration — Reduces transepidermal water loss.









