**Clinical study: % of satisfaction, 42 volunteers, 56 days.
Full list of ingredients :
1. What are serums for?
2. Can the Serum be used on sensitive skin?
3. Is Instant Firming Serum suitable for use during pregnancy and breastfeeding?
4. Does Instant Firming Serum also visibly target dark spots?
5. What is an alternative to retinol?