Hydroxypinacolone Retinoate (HPR) is an ester retinoid that binds directly to retinoic acid receptors without conversion, delivered here in Dimethyl Isosorbide, a penetration-enhancing solvent. The combination supports anti-aging, skin renewal, and acne-related benefits with generally better tolerability than retinoic acid.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or stinging | Uncommon | Less common than with traditional retinoids, but possible especially at higher concentrations or with the DMI solvent enhancing penetration. |
| Dryness or flaking | Uncommon | Typical retinoid-type desquamation; usually mild and transient. |
| Redness or erythema | Uncommon | May occur during initial use or with frequent application. |
| Increased photosensitivity | Uncommon | As with retinoids generally; daytime sun protection is advised. |
| Allergic contact dermatitis | Rare | Isolated sensitivity reactions reported. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.