It is considered the best idea to apply niacinamide before salicylic acid. This is because the humectant traits of niacinamide ensure the natural skin barrier contains the correct levels of water. When the skin barrier is moisturised and healthy it can keep itself protected from exposure to free radical damage.
Can niacinamide and salicylic acid be used together? The simple answer is yes. They complement each other well. Being oil soluble, salicylic acid can penetrate deeper into the skin layers, but it can also dehydrate and irritate skin.
Niacinamide and Salicylic Acid
Salicylic acid works more effectively when layered with niacinamide. Niacinamide is an antioxidant that reduces inflammation and helps with acne. It's always good to use salicylic acid in a cleanser or a face mask and layer it with niacinamide.
This depends on the product you are using that contains salicylic acid in it. When using a skincare routine the easiest way to figure out the order the products should be applied, its thinnest to thickest.
Although many products containing salicylic acid recommend that you apply them in the morning and night, you should always be cautious when using an ingredient like this in the day as salicylic acid can make the skin more sensitive to the sun.
Use Salicylic Acid in the morning and Retinol at night. Those with more sensitive skin may need to use these products on alternate days, or reduce Salicylic Acid use to once a week or as and when needed.
Day or Night
One of the most popular Beta Hydroxy Acids (BHAs), salicylic acid is an ultra-common ingredient in many acne fighting products, and is well-suited for both day and night.
Any skin type and age can benefit from using niacinamide in their skincare routine. Ideally you should use it twice a day, both morning and evening. For the most beneficial results, opt for formulas (like serums and moisturisers) that can be left on the skin for maximum absorption.
Salicylic acid also improves the shape of the pore lining, and once the pore is normalized, the backed-up, smaller clog can more easily come to the surface, appearing as new clogged pores (blackheads or white bumps).
Don't Mix: Niacinamide and vitamin C. Although they're both antioxidants, vitamin C is one ingredient that's not compatible with niacinamide. "Both are very common antioxidants used in a variety of skincare products, but they should not be used one right after the other," says Dr. Marchbein.
Is it okay to use salicylic acid every day? While it is okay to use salicylic acid every day, it could cause irritation. Many dermatologists, therefore, recommend using the acid in moderation, beginning by applying it three times a week and working up from there.
You should spot test your salicylic acid product on a small patch of your skin before you incorporate it into your skincare routine, to make sure that you don't have an allergic reaction. To do this, clean your skin and dry it. Then, test a small amount of the acid on a small patch of skin on your face.
Although salicylic acid is considered safe overall, it may cause skin irritation when first starting. It may also remove too much oil, resulting in dryness and potential irritation. Other potential side effects include: skin tingling or stinging.
Can I leave salicylic acid overnight? Yes, you can, but only once you have built the skin's tolerance. For those with a skin type that is oily and prone to acne and breakouts, salicylic acid is the best ingredient to use to combat any concerns.