Q: Can I mix your products together before applying?

A: Some products can be mixed; others should be layered: 

Safe to Mix: 

• 4D Hyaluronic Acid Serum + any moisturizer for enhanced hydration 

• Snail Mucin essence (from masks) + other hydrating products 

Never Mix: 

• Collagen Retinol 4D Hyaluronic Acid Cream with any other active ingredients 

• Products with different pH requirements 

Mixing Guidelines: 

• Proper ratios: Use 1:1 ratio when mixing compatible products 

• Fresh mixing: Only mix what you’ll use immediately 

• Patch test: Test any new combinations on small areas first 

• Professional consultation: Ask dermatologist about complex mixing protocols