CSA For Beginners

Unlock the simple, clinically proven approach to youthful, glowing skin - both instantly and over time. It’s as easy as using vitamin C plus sunscreen in the morning and vitamin A (also known as retinol/retinal) at night. We call this; the CSA PhilosophyⓇ.

2 Products

Daily Radiance Vitamin C™

C-Tetra 7% Vitamin C Cream SPF 30 Two-in-One Moisturiser

50ml / €80,00

Crystal Retinal 1

0.01% Retinal serum for very sensitive skins - 11x faster than retinol

30ml / €56,00

Crystal Retinal 3

0.03% Retinal serum for vitamin A beginners - 11x faster than retinol

30ml / €65,00

Crystal Retinal 6

0.06% Retinal serum for regular vitamin A users - 11x faster than retinol

30ml / €86,00

Crystal Retinal 10

0.1% Retinal serum for advanced vitamin A users - 11x faster than retinol

30ml / €110,00

Crystal Retinal 20

0.2% Retinal serum for highly experienced vitamin A users - 11x faster than retinol

30ml / €125,00

Crystal Retinal 24

Award-winning Age-Defying Vitamin A Night Serum

30ml / €135,00