Free Tools/Active Compatibility Engine
Compatibility EngineMolecular Interactions • pH Dependency • Application Timing

Active Pairing & Conflict Checker (“Can I Use?”)

Pick any two skincare actives to instantly verify molecular compatibility. Inspect formulation pH gradients, enzymatic degradation hazards, wait times, and modern myth-busters.

Quick Test: Common Active Combinations
Optimal pH: 2.8 – 3.5Slot: AM
Optimal pH: 5.0 – 7.0Slot: AM/PM
fine
Pure Vitamin C + Niacinamide

Compatible: No Direct Molecular Contraindication

Pharmacological Mechanism:No documented chemical hydrolysis, oxidation, or pH conflict exists between these two active ingredients at ambient room temperature.
Application Schedule & Protocol:Apply from lowest viscosity (water/gel) to highest viscosity (cream). Monitor for subjective irritation if combining multiple potent treatments.
Optimal TimingSame Regimen Permitted
Wait Time RequiredNone (absorb to dry down)
Skin Barrier ImpactSafe / Physiological

Browse All Documented Skincare Pairings

Explore individual research dossiers with dermatological study citations.

Browse 20+ Pairing Guides →

Check Your Whole Shelf Simultaneously

The Miko iOS app runs matrix conflict checks across all 10+ bottles on your bathroom shelf in real time, alerting you before you unscrew a cap.