Ceramide AS is a synthetic sphingolipid that mimics naturally occurring skin ceramides, helping restore and reinforce the stratum corneum barrier and reduce transepidermal water loss. It is commonly used in moisturizers and barrier-repair formulations.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient irritation or stinging | Rare | Usually related to other formulation components rather than the ceramide itself. |
Contact allergy / sensitization | Very rare | Ceramides are generally well tolerated and identical to skin lipids; allergic reactions are seldom reported. |
Clogged pores / comedogenicity | Very rare | Low comedogenic potential; risk depends mainly on overall formulation. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.