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 · Direct AntioxidantsTier 2 Viscosity

L-Ascorbic Acid (Pure Vitamin C)

Ideal Formulation pH: 2.8 – 3.5
Preferred Routine Slot: AM
Pregnancy Safety: PERMITTED
Typical Clinical Dose: 10% – 20%
🧪Viscosity & pH Application Order

How to Layer These Actives in Your Routine

Step 01Viscosity Tier 2

L-Ascorbic Acid (Pure Vitamin C)

Apply first to clean, dry skin. Operates at pH 2.8–3.5.

⏱️Wait 10 Minutes

Allows cutaneous acid mantle to equilibrate before the next step.

Step 02Viscosity Tier 2

Resveratrol

Layer over the initial active. Operates at pH 4.5–6.

Biochemical Mechanism & Pharmacology

Resveratrol and L-Ascorbic Acid (Pure Vitamin C) 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 L-Ascorbic Acid (Pure Vitamin C) (pH 2.8–3.5, Viscosity Tier 2) first. Allow 10 minutes for cutaneous pH equilibration before applying Resveratrol (pH 4.5–6, Viscosity Tier 2).

Recommended 7-Day Routine Blueprint

Morning (AM) RoutineEvening (Night A)Evening (Night B)
✓Gentle Cleanser
✓L-Ascorbic Acid (Pure Vitamin C)
✓Broad-Spectrum SPF 50+
•L-Ascorbic Acid (Pure Vitamin C)
•Resveratrol
•Barrier Cream
•L-Ascorbic Acid (Pure Vitamin C)
•Resveratrol
•Barrier Cream

Obstetric & Pregnancy Safety Summary

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Resveratrol is classified as PERMITTED during pregnancy, while L-Ascorbic Acid (Pure Vitamin C) is classified as PERMITTED under clinical guidelines. Always cross-reference with your physician if expecting.

Clinical Studies & Pharmacological Citations