Beta-Glucan Power Moisture Serum — Reddit Reviews

Name: Beta-Glucan Power Moisture Serum
Brand: iUNIK

by iUNIK

176mentionsacross 29 Reddit threads

Updated July 20, 2026

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What the community says

Lightweight, beta glucan-heavy hydrating serum beloved by many with dry or compromised skin for deep moisture and barrier support, though recent formula changes have caused irritation and breakouts for some.

From Reddit

Backed by 29 threads from r/tretinoin, r/koreanskincare and 3 more.

Read the threads ↓

What people love

High beta glucan concentration delivers deeper hydration than hyaluronic acid for dry and dehydrated skin
Lightweight, non-clogging serum that layers well under makeup and moisturizers
Favored by tretinoin users for soothing and barrier repair without irritation

Watch out for

Recent reformulation reduced hydration efficacy and caused breakouts or burning in sensitive users
Contains 1,2-hexanediol that may trigger redness, itching, or allergic reactions in sensitive/rosacea skin
Humectant effect can amplify tretinoin penetration, potentially increasing irritation if layered incorrectly