Hydroxypinacolone Retinoate (HPR) is an ester of retinoic acid that binds directly to retinoid receptors without conversion, offering anti-aging and skin-renewal benefits. It is generally considered gentler than traditional retinoids while remaining biologically active.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or redness | Uncommon | Less common than with retinol or retinoic acid, but possible especially at higher concentrations. |
| Dryness or flaking | Uncommon | Typical of retinoid activity; usually milder than with conventional retinoids. |
| Stinging or sensitivity | Rare | May occur in sensitive skin or with concurrent use of other actives. |
| Allergic contact dermatitis | Very rare | Isolated reports; not common in available research. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.