6 Skin Care Ingredients That Don’t Mix

Some topics work poorly when combined, destabilize an important component or increase skin irritation. Here’s how to build a smart skincare routine.

Let’s put two scenarios: First, you enter Sephora or Olta and buy a new product excited to add to your routine based on the promises of the bottle. Second, you see someone on Instagram talking about how to completely change the skin of a particular product and its order. These products may be good on their own, but do they fit your routine now? Or could it work against you?

“Some ingredients don’t play with each other,” says Brooke Sekora, MD, dermatologist from Chestnut Hill, Massachusetts. She says that the ingredients that should not be applied are those that are difficult to keep stable in a formula, increase the risk of discomfort together or cancel each other out when combined.

With a little knowledge, you can simplify your routine to make sure all the ingredients work for you and bring you closer to your good goals. Here are scenarios where additional caution is required:

Retinoid or Retinol and Alpha Hydroxy Acid

Both vitamin A derivatives, such as retinol and retinoids, such as alpha hydroxy acids (AHA), and glycolic acid, are a dermatologist’s specialty for anti-aging because they accelerate the skin’s cell renewal rate and increase production of collagen for thin skin without lines. In this case, however, more is not better.

“Both exfoliate the outer layer of the skin,” they say, have annoying side effects, especially in combination. “When the skin is irritated (think: red, stingy),” says Dr. Elizabeth Pahar Hohmand, MD, dermatologist accredited by the Dallas Board of Directors. , Flaky and scaling), is less likely to adhere to the system. You do not have to choose one or the other. Patients are recommended to use this topic on alternate days (AHA on Monday, retinoid on Tuesday, etc.).

An exception? The products have been specifically tested through clinical trials that combine retinoids and AHA, says Deirdre Hooper, MD, a board certified dermatologist at Audubon Dermatology in New Orleans. One like AlphaRet by Skinbetter Science. A study published in December 2017 in the Journal of Cosmetic Dermatology found that this combination of retinoid cream in combination with a prescribed retinoid product reduces the signs of aging with fewer side effects such as redness.

Retinoid or Retinol and Benzoyl Peroxide

It is known that retinoids are anti-aging, but they are also a powerful force to eliminate acne, as they exfoliate the skin to prevent clogged pores. As such, both retinoid and benzoyl peroxide can be attracted.

Think twice before doing that. “Benzyl peroxide can eliminate the retinoid molecule,” says Sekora. Meaning: You have good intentions to fight acne with counterproductive results. Previous research indicated that modern preparations of tretinoin retinoid remain constant with benzoyl peroxide. There is also a specially formulated product on the market, called Epiduo Forte, which combines adapalene (retinoid) and benzoyl peroxide safely and effectively. Instead, consider using benzoyl peroxide in the morning and retinol at night.

Retinoid or Retinol and Vitamin C

Here is the feature: use retinoids wisely. The third layered narrative is retinoids and vitamin C. “Vitamin C is a difficult ingredient to formulate because it is more effective in an acidic acid environment. Retinol works at a higher (more alkaline) pH.” Sekura says: “If used together, it won’t work optimally.” An easy solution is to use both sometimes. Retinol is best applied at night (makes the skin more sensitive to light, increases the risk of sun damage), and vitamin C works best during the day, because it is an antioxidant that protects against current aggressions, such as The effects of pollution. It damages the skin and UV rays, she says.

Retinoid or Retinol and Salicylic Acid

It is quite common to have a mature skin full of acne too. In an effort to reduce the appearance of fine lines and wrinkles, you may be asked to use retinoid. To combat a good fight against acne, you can also use salicylic acid, which is beta-hydroxy acid (BHA) that increases the renewal of skin cells, to keep pores clean. But individually, each one can dry the skin, so it must be carefully combined.

The danger is excessive dehydration, which can cause irritation and make the situation worse. “To compensate for excessive dehydration, the skin will increase oil production, which can create a vicious cycle of dehydration and acne,” says Sekora. The solution: use salicylic in the morning and retina at night.

Soap-Based Cleanser and Vitamin C

Vitamin C is designed as a morning product. But what he purified with previous matters as well. As mentioned earlier, vitamin C is best when formulated with a low pH, although Leslie Bowman, MD, writes in MDedge Dermatology that the use of a high-pH soap-based cleaner will ultimately reduce the ability of the skin To absorb vitamin C.

This is a problem. Not only is their interest in protecting free radicals lost, but a July 2017 review in The Journal of Clinical and Aesthetic Dermatology found skin ages, but well-formulated vitamin C products (such as Skinceuticals CE Ferulic) are expensive. Get the value of your skin and money by washing it with a salicylic or glycolic based antiseptic in the morning before using C oil, as recommended.

Two Products With the Same Actives

Turn these bottles: there is no good reason to use multiple forms of the same medication, says Dr. Huber. An example uses two products for acne with benzoyl peroxide. Another example is to apply a glycolic acid mask and then finish with a cream containing mandelic acid, which are AHA.

“My interest in multiplying the activity itself is irritation,” she says. Increased irritation is a sign that the skin barrier may malfunction, which increases the possibility of side effects of the active ingredients.

However, there is an exception: if you do it without an accident, as is the case, your skin does not become red and free after using two products that contain AHA, and you get the results you are looking for, then you have a great help to continue. For most people, this will be very hard.

Bottom line: if you suffer from side effects (redness, burning, peeling) or are not getting the results you want, there may be something wrong with the way you publish your topics. Talk to a dermatologist, who can help you build a system that works, and also makes your skin feel comfortable.

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