go slower than usual.
Retinoids can transiently worsen redness during acclimation.
how to use it. Start slow (2 nights per week). Use lower-conversion forms (retinol, adapalene) if irritation persists.
why it works. Initial irritation is expected. If persistent past 6 weeks, the concentration or vehicle is wrong for this user.
Reviewed with 1 source on 2026-07-03.
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