Active A · Direct AntioxidantsTier 2 Viscosity
Resveratrol
Ideal Formulation pH: 4.5 – 6
Preferred Routine Slot: PM
Pregnancy Safety: PERMITTED
Typical Clinical Dose: 0.5% – 1.0%
Active B · Cell Turnover / RetinoidsTier 2 Viscosity
Retinol
Ideal Formulation pH: 5.5 – 6.5
Preferred Routine Slot: PM
Pregnancy Safety: DEFER IN PREGNANCY
Typical Clinical Dose: 0.1% – 1.0%
🧪Viscosity & pH Application Order
How to Layer These Actives in Your Routine
Step 01Viscosity Tier 2
Resveratrol
Apply first to clean, dry skin. Operates at pH 4.5–6.
⏱️Wait 2 Minutes
Allows cutaneous acid mantle to equilibrate before the next step.
Step 02Viscosity Tier 2
Retinol
Layer over the initial active. Operates at pH 5.5–6.5.
Biochemical Mechanism & Pharmacology
Resveratrol and Retinol operate via distinct physiological mechanisms without reactive cross-oxidation or competing receptor antagonisms. They can be safely integrated into the same routine when sequenced properly from thinnest to thickest consistency.
Cutaneous pH Stability Note:
Apply Resveratrol (pH 4.5–6, Viscosity Tier 2) first. Wait 1–2 minutes for absorption, then follow with Retinol.
Recommended 7-Day Routine Blueprint
| Morning (AM) Routine | Evening (Night A) | Evening (Night B) |
|---|---|---|
✓Gentle Cleanser ✓Resveratrol ✓Broad-Spectrum SPF 50+ | •Resveratrol •Retinol •Barrier Cream | •Resveratrol •Retinol •Barrier Cream |
Obstetric & Pregnancy Safety Summary
View Full Pregnancy Directory →Resveratrol is classified as PERMITTED during pregnancy, while Retinol is classified as DEFER IN PREGNANCY under clinical guidelines. Always cross-reference with your physician if expecting.