Vitamin C is an effective antioxidant that brightens the skin tone and reduces the appearance of signs of aging. This water-free formula provides 30% pure L-Ascorbic Acid which remains completely stable due to the absence of water. Due to the presence of very light silicones, this formulation feels smooth on the skin despite the suspension format of the formulation, avoiding the short-lived gritty feeling of our original Vitamin C Suspension 23% + HA Spheres 2% formula. This treatment is ideally applied at bedtime.   This product is a water-free suspension of 30% Ascorbic Acid powder. The Ordinary's portfolio of Vitamin C includes the following formulations:

• Vitamin C Suspension 30% in Silicone
• Vitamin C Suspension 23% + HA Spheres 2%
• Ascorbyl Glucoside Solution 12%
• Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F
• Magnesium Ascorbyl Phosphate 10%
• Ascorbic Acid 8% + Alpha Arbutin 2%
• Ethylated Ascorbic Acid 15% Solution
• 100% L-Ascorbic Acid Powder

Topical Vitamin C offers a wide array of benefits to the skin. However, many forms of Vitamin C and many more formulations of Vitamin C are available commercially with a potential to confuse the audience. We have developed a guide that offers guidance on the formulations of Vitamin C offered under The Ordinary range. It also offers education on Vitamin C itself and on the differences between formulations of Vitamin C at large. Note: The format of this formula is a suspension of very fine L-Ascorbic Acid powder and, as such, provides the most direct exposure of extremely high concentrations of Vitamin C topically. With such format, a very strong tingling but non-irritating sensation is expected during the first 1-2 weeks of use until the skin's tolerance to such high exposure is elevated. If the sensation is too strong to tolerate, the formula can be mixed on each application with other creams or serums of your preference.   Alternative products on the market offer suspensions of Vitamin C in water-free formulations in heavier silicone bases. These formulations do keep the Vitamin C stable but they are almost always offered in heavier silicone bases that interfere with efficient exposure of the entire Vitamin C content to the skin (the silicone entraps the Vitamin C). Our formula avoids the use of heavy silicones to offer better exposure to the Vitamin C content. However, please note that this formulation would still offer slightly less efficient exposure to Vitamin C than our silicone-free Vitamin C Suspension 23% + HA Spheres 2% formula. The additional Vitamin C content (30%) in this silicone base helps offset the slight impairment to dermal exposure. Patch tests are an easy way to help predict if you may experience a negative initial reaction to a new product. It is recommended to perform a patch test before incorporating any new product into your regimen. We have outlined a general method for conducting your own patch test below based on the type of product.