Vitamin C Serum

Although topical vitamin C is generally well-tolerated, all products have the potential to cause side effects 

you should always do a patch test to assess your risk for alergic reaction. Select a small area of skin that’s easy to conceal, like your forearm. Apply a small amount of product and wait 24 hours. If no side effects occur, you can apply to your face. Discontinue use if you develop a rash, redness, or hives. EWÀ Vitamin C serum is typically applied once or twice per day. A good rule of thumb is to cleanse, lone, apply vitamin C serum, and then moisturize. It can be safely used in conjunction with other active ingredients, although use alongside niacinamide may render vitamin C less effective