I started applying salicylic acid after the cleansing and toning steps and before moisturising. It is important that you let your skin absorb the product.
You can test this yourself with a well formulated exfoliant: at night, apply your AHA or BHA as usual after cleansing and toning, and do a "split-test." Wait 20 minutes before applying your serum and/or moisturizer to one side, but the other side of your face, apply those next steps immediately.
Wash hands after use. If using cleansers containing salicylic acid, wet the affected area. Gently rub the cleanser into the skin for 10 to 20 seconds. Do not scrub the skin.
Many dermatologists, therefore, recommend using the acid in moderation, beginning by applying it three times a week and working up from there. Can salicylic acid dry the skin out? Yes, which is why it's best to start in moderation and combine it with a more moisturizing product, like a lotion.
Do you apply salicylic acid before or after moisturiser? Generally speaking, the most potent skin products containing salicylic acid are those such as serums, spot treatments and cleansers, all of which are applied before moisturisers.
Engelman notes that “if you're working with salicylic or glycolic acid, they need to be coupled with some sort of moisturizer or lotion to combat the drying effects that they can have on the skin. If your skin is oily and acne-prone, use an oil-free moisturizer to add back the hydration that could be stripped away.”
Acne can cause your skin to feel oily and greasy, so a moisturizer may be the last thing you'd think of trying. A moisturizer, however, may be just what you need if you're using one of the following acne treatments: Benzoyl peroxide.
It is safe to use products with salicylic acid every day, unless it is specified otherwise on the product usage guidelines or by your health care professional. CeraVe's SA Smoothing Cream and SA Smoothing Cleanser are suitable for daily use.
You want to make sure that you're not using a product that has too high of a concentration of salicylic acid. Gels should have no more than 5% acid. Lotions that are applied once or twice a day should have 1–2% salicylic acid, and solutions like cleansers or toners should have 0.5–2% salicylic acid.
You get the maximum benefit when you adjust your skin to start using it twice a day. But, if you are sensitive to salicylic acid and using it up regularly left your skin dry, red, and peeling, then use it as a toner and leave it up for up to 30 seconds and then rinse off.
Wipe the pad over the affected areas. Do not rinse off medicine after treatment.
Salicylic acid dries out excess oils (sebum) in your pores. However, it could remove too much oil, making your face unusually dry.
“You can use a salicylic acid–based cleanser in the morning to unclog pores and avoid acne and a glycolic acid–based cleanser at night to exfoliate your skin and get rid of dead skin cells,” notes Jailman.
The Ingredient: Salicylic Acid
When You'll See Results: When you use a product with salicylic acid, “there are some immediate improvements, because it helps dry out pimples,” Dr. Zeichner says. But getting the full blemish-busting effects takes about 12 weeks of regular use.
Avoid washing treated skin or applying other skin products for at least 1 hour after applying this medicine. Avoid using other medications on the areas you treat with clindamycin and tretinoin topical unless your doctor tells you to.
“Spot treatments are usually used at bedtime, so after you cleanse, tone and apply moisturiser, then use the treatment on your spot and leave it overnight.” Even if you're using an acne patch and choose to do so in the day, follow your regular morning routine and then use the patch over it.
If you over-moisturize, the leftover moisturizer just sits on your face. With nowhere to go, this extra moisturizer will eventually fill up the pores on your skin and clog them, resulting in the production of acne, whiteheads, and blackheads.
But overall, stick to using water-based products and serums together. AHAs and BHAs, such as glycolic, salicylic, and lactic acids should never be used with Vitamin C. Vitamin C is an acid, too, and is unstable, so the pH balance will be thrown off by layering these ingredients together and might as well be useless.
Acne treatments — especially those that contain active ingredients like benzoyl peroxide and salicylic acid — are drying and a bit harsh on your skin. If you use too many treatments at the same time, your skin may become irritated, and you may actually suffer more breakouts as a result.
"The primary negative side effect of salicylic acid is its ability to irritate and dry skin in those who are very sensitive or those who overuse it," says Dr. Nazarian.
Can you leave salicylic acid on your face overnight? Yes, you really can! You can use salicylic acid twice a day if required, those with a skin type that is oily and prone to breakouts will benefit from using the BHA most.
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.
Using both together will however can become too much for the skin and lead to irritation, rashes, redness, flakiness and all-round discomfort. Much like vitamin C and niacinamide, if you are wanting to use both separate the products completely and apply salicylic acid in the morning and retinol for the evening.