STAY-C®50, Vitamin C

28 Ağustos 2020

The All-Round Beauty Solution for Skin Perfection*

DSM pioneered vitamins for beauty, being the first to explore their potential as active ingredients for use in cosmetic applications. Today, DSM as the world’s leading supplier of vitamins, is proud to deliver Vitamin C of the highest quality in different forms and granulometries.

What is Vitamin C?

Vitamin C is a molecule called Ascorbic acid that is naturally occurring in our body. Since humans are unable to synthesize it, it has to be externally supplemented. Especially in the skin, where Vitamin C levels are easily depleted by UV irradiation, pollutants and aging, topical application of Vitamin C becomes crucial to protect and improve human skin.

Vitamins are, by definition essential to life. Like all of DSM’s vitamins, Quali®-C now comes with the Quality for Life™ seal; guaranteeing the highest standards for Quality, Reliability, Traceability and Sustainability. Sustainability is fully embedded at DSM’s Quali®-C production site in Dairy, Scotland, where Ascorbic acid has been in production since 1983. Compared to main alternative sources, DSM provides the lowest carbon footprint for Ascorbic acid production with 59% lower greenhouse emissions. This effort had been rewarded with the European Responsible Care Environment Award by CEFIC in 2015.

High Consumer Awareness

Among consumers, vitamins are considered imperative cosmetics ingredients. No other group of ingredients has gained such high awareness in beauty products. 3 out of 5 women know that vitamins are in cosmetic products. Vitamin C is a popular and trusted ingredient among consumers with many benefits to offer. In fact, worldwide, 1 in 20 products contains Vitamin C and the awareness of vitamin C is much higher than other beauty boosting actives. 71% of consumers are aware that Vitamin C promotes the appearance of skin, hair and nails.

Ascorbic Acid in Different Forms

L-Ascorbic acid is the only active form of Vitamin C, however it is also highly susceptible to oxidation. To ensure better stability in formulation and enhance skin penetration of Vitamin C, different forms and stable derivatives of Ascorbic acid have been developed and launched on the market. DSM offers different grades of Vitamin C under Quali®-C brand:

Ascorbic Acid: Genuine Vitamin C in one of the finest grades available on the market. (Ascorbic acid ultra-fine powder)
STAY-C® 50: Most stable Vitamin C specialty and multi-talent active which delivers vitamin C efficiently into the skin.
Ascorbyl Palmitate: The oil-soluble technical ingredient used to protect cosmetic emulsions and oils against oxidation.

Key Areas of Benefits

  • Excellent antioxidant by reducing peroxides formation and carbonylated proteins.
  •  Boosts collagen synthesis and improves skin firmness.
  • Evens the skin tone and reduces age spots by limiting the production of melanin.
  • Improves the appearance of acne-prone skin.
  • Limits the growth of oral bacteria for healthy teeth and gum
  • Has deodorant activity.
  • Many cosmetic applications of Vitamin C can be counted as:
    day care, anti-aging, sun care, clarifying perfection (anti-acne), skin tone applications, oral and body care products.

Formulating with Vitamin C

For a better stability performance, pH equal to 6 or above is needed. Addition of 0,05-0,1% sodium meta-bisulfite is needed for colour stability improvement. Chelating agents such as EDTA, phytic acid etc is needed to prevent degradation by heavy metal ions. Stay-C 50 is readily soluble in water. It has to be added to water, then it has to be introduced to the emulsion as an aqueous solution below 35-40°C.

Stability in Formulation

Stay-C® 50 is ≥ 90% stable at all temperatures (4°C, RT, daylight, 40°C) after 3 months storage.

Stay-C® 50: Two Steps for the Best Activity

Stay-C® 50 penetrates the skin surface and is bioavailable into the skin as ascorbic acid. The amount of ascorbic acid and Stay-C® 50 on each skin layer by HPLC.

*It has been summarized and translated to Turkish from DSM, ’Vitamin C STAY-C®50 The all-round beauty solution for skin perfection, Quali®-C‘ brochure.


Burçak Alioğlu

Technical Sales Manager
Arkem Kimya