Medik8 Crystal Retinal 20 - Age-Defying Retinal Night Serum - Improves Wrinkles & Skin Firmness- 0.2% Retinal Strength - 11x Faster than Retinol - For Highly Experienced Vitamin A Users - 30mlFAST WRINKLE REDUCING POWER Wrinkle reduction with just 1 tube. Retinaldehyde works up to 11 times faster than classic retinol. RADIANT, YOUTHFUL SKIN Delivers remarkable visible improvement in texture, brightness, firmness & clarity. Vitamin A is a key pillar of Medik8's simple yet effective anti ageing strategy of using vitamin C followed by sunscreen by day, and vitamin A at night. This is called the CSA philosophy. PROFESSIONAL GRADE RESULTS Our