The golden rule: apply from thinnest to thickest consistency (water-based before oil-based).
Remove nighttime oil buildup without stripping moisture barrier.
Dampen skin with Hyaluronic Acid or Centella to prep absorption.
Protects against free radicals, pollution, and UV damage.
Gel or light lotion to lock in hydration without heaviness.
Non-negotiable. Apply 1/4 teaspoon for full face & neck.
Oil cleanser melts SPF & makeup; water cleanser purifies pores.
AHA/BHA (2-3x weekly) or Retinol. Never combine on same night!
Niacinamide, Peptides, or Ceramide serums to soothe skin.
Tap gently with ring finger around orbital bone.
Rich barrier repair cream to seal active ingredients overnight.
| Ingredient Pair | Safe Together? | How to Use Safely |
|---|---|---|
| Vitamin C + Sunscreen | ✓ Excellent | Apply Vitamin C under sunscreen for synergistic antioxidant protection. |
| Retinol + Niacinamide | ✓ Excellent | Niacinamide reduces irritation and strengthens barrier against retinol redness. |
| Hyaluronic Acid + Everything | ✓ Safe | Apply onto damp skin before any other active or cream. |
| Retinol + AHA / BHA | ✗ Avoid together | Use on alternate nights to avoid compromised skin barrier and peeling. |
| Vitamin C (L-Ascorbic) + AHA/BHA | ⚠ Caution | Can cause stinging and low-pH irritation. Use Vitamin C in AM, Acids in PM. |
| Benzoyl Peroxide + Retinol | ✗ Incompatible | Benzoyl peroxide oxidizes and deactivates pure retinol. Alternate AM/PM. |