Previous page Next page Previous page Next page Find Your Strength Crystal Retinal 1 Serum Add to Cart Crystal Retinal 3 Serum Add to Cart Crystal Retinal 6 Serum Add to Cart Crystal Retinal 10 Serum Add to Cart Crystal Retinal 20 Serum Buying Options Customer Reviews 4.4 out of 5 stars 317 4.4 out of 5 stars 317 4.4 out of 5 stars 317 4.4 out of 5 stars 317 4.4 out of 5 stars 317 Price $55.00 $ 55 . 00 $64.00 $ 64 . 00 $85.00 $ 85 . 00 $109.00 $ 109 . 00 — Strength 0.01% Retinaldehyde 0.03% Retinaldehyde 0.06% Retinaldehyde 0.10% Retinaldehyde 0.20% Retinaldehyde Skin Type For very sensitive skin New to retinoids? Start here Experienced with retinoids Move here after Strength 6 Move here after Strength 10 Skincare Concern Peptides Fine lines, wrinkles, firmness Fine lines, wrinkles, firmness Fine lines, wrinkles, firmness Fine lines, wrinkles, firmness Patents Long-lasting stability system Long-lasting stability system Long-lasting stability system Long-lasting stability system Long-lasting stability system Dermatologically Tested ✔ ✔ ✔ ✔ ✔ Paraben/Phthalate Free ✔ ✔ ✔ ✔ ✔