Q: How often should I use each product?

A: Frequency depends on the product and your skin tolerance: 

Collagen Retinol 4D Hyaluronic Acid Cream: 

• Start: Once weekly for 2 weeks 

• Build to: Every other night maximum 

• Advanced users: Up to 4-5 nights weekly 

Snail Mucin Masks: 

• Frequency: 2-3 times weekly 

• Duration: 15-20 minutes per application 

• Can use on same nights as retinol for soothing 

Pimple Patches: 

• As needed for active breakouts 

• Leave on 6-8 hours or overnight 

• Replace when patch turns white/opaque 

4D Hyaluronic Acid Serum: 

• Daily use, morning and/or evening 

• Can be used every day without restriction 

• Excellent for supporting retinol tolerance