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C-31™Niacinamide · Vitamin C+ · Vitamin E · Provitamin B5

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Six actives usually means three or four products.

A niacinamide here, a vitamin C there, as many brands as quality levels.

C-31 puts them in one serum: one step, every morning, the first layer.

How to Use

C-31, morning serum, first layer, 30 ml. Apply 2 to 3 drops to clean face and neck every morning, then press in gently. Your first step of the day, before moisturizer and sunscreen.

Full Ingredient List
  • Fragrance free
  • Cruelty free
  • Alcohol free
  • Vegan friendly
  • Mineral oil free
  • Paraben free
  • Phthalate free
  • Sulfate free

C-31
Aqua (Water), Butylene Glycol, Aluminum Starch Octenylsuccinate, 1,2-Hexanediol, Niacinamide (Vitamin B3), Panthenol (Provitamin B5), Propanediol, 3-O-Ethyl Ascorbic Acid (Vitamin C), Ammonium Acryloyldimethyltaurate/Carboxyethyl Acrylate Crosspolymer, Linoleic Acid, Phospholipids, Tocopheryl Acetate (Vitamin E), Sodium Citrate, Acacia Senegal Gum, Xanthan Gum, Ethylhexylglycerin, Citric Acid.

How Refills Work

With Automatic Refills, your C-31 arrives every 4, 6 or 8 weeks, on the schedule you choose (6 weeks by default). You can change it anytime.

There is no minimum commitment. Cancel anytime, even right after your first order. We email you before every refill, so you can skip, pause or change your rhythm. An order already paid still ships; cancelling stops future refills.

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C-31
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  • Fragrance free
  • Cruelty free
  • Alcohol free
  • Vegan friendly
  • Mineral oil free
  • Paraben free
  • Phthalate free
  • Sulfate free