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HOME Product > Cosmeceutical > C'ensil
L-Ascorbic acid 30% w/v Topical serum
Stable & High Concentrated Pure Vitamin C

C’ensil L-Ascorbic Acid 30% w/v topical serum can help dark and aged skin turn to firmer, smoother and brighter skin with overall radiance in a short time. Formulated by U.S. patented ATDS (Amphiphilic Transdermal Delivery System) which allows easy and highly effective penetration of high concentration of pure Vitamin C into the skin, this powerful Anti-oxidant serum improves skin texture and fine lines by stimulating new collagen synthesis, and improves discoloration by inhibiting melanin production.

C'ensil clinical study was published in Journal of Cutaneous Medicine and Surgery (cf. Clinical efficacy of 25% L-ascorbic acid (C'ensil) in the treatment of Melasma, Hwang SW, Oh DJ, Lee D, Kim JW, Park SW., 2009 Mar-Apr ; 13(2) ; 74-81)


  • -High Concentration of Pure Vitamin C (L-Ascorbic Acid 30%)
  • -Effective Penetration : Up to 92% penetrated by the US patented ATDS (other brand 26.4%)
  • -High stability : Stable over 3 years (No water contained)
  • * H2O is the main factor accelerating the loss of vitamin C’s activity
  • -Less Skin Irritation : pH level 5.5
  • * No Alcohol, No preservatives, No artificial fragrance or color.

What is ATDS (the Amphiphillic Transdermal Delivery System)?

Unlike most of other products that use water or alcohol as a solvent,
All C'ENSIL products provide vitamin C and various active ingredients into our special amphiphilic solvent
which is both hydrophilic and lipophilic.

​ Our skin is composed of hydrophilic layers and lipophilic layers.
Since Vitamin C is a water-soluble ingredients,
It cannot be absorbed in lipophilic layers.

However, through ATDS technology, vitamin C can actually penetrate deeply and evenly,
not only into hydrophilic layers but also lipophilic layers, which can maximize the effect of vitamin C.​

The Innovation of L-Ascorbic acid technology

Further to the breakthrough solutions in 1999 to the stability and high concentration, a Technology difficulty to the ester-C and nano-C, Dr. Chen introduced ATDS (Amphiphilic Transdermal Delivery System) in 2003 to the market with U.S.patent. This innovation once again leads the world in L-Ascorbic acid technology.
Plates and Probes Specifications
The 1st generation Vit. C The 2nd generation Vit. C The 3rd generation Vit. C
[ C’ensil ]
Character Hydrophilic L-Ascorbic acid Lipidphilic L-Ascorbic derivates Amphiphilic L-Ascorbic acid
Solute L-Ascorbic acid L-Ascorbic acid derivates L-Ascorbic acid
Solvent water water Amphiphilic solvent
( No water contained )

The US & International Patented For ATDS Technology


ODM, OBL Development are available

  • - L-Ascorbic acid(15% ~ MAX 30%)
  • - Vitamin C(15% ~ MAX 30%)+E
  • - Vitamin C 25%+EGCG
  • - Vitamin C+E+Alpha Lipoic acid
  • - Vitamin C+E+Ferulic acid
  • - Vitamin A+E
  • - Alpha-arbutin+Vitamin B
  • - CoQ10
  • - Ferulic acid