Skincare Ingredients That Should Never Be Used Together

In your search for very effective skincare products, it may have never crossed your mind that there are skincare ingredients that should never be used together because they not only can cause problems to your skin but become ineffective as well.

If you just think of how many different skin care products you use every day like cleansers, toners, serums, masks and moisturizers, then finding the most effective and safe skincare combinations should really be of interest to you.

Also, when it comes to buying skincare products from high end cosmetic stores, it is often the case that you get very little information relating to those combinations of skincare ingredients that should be avoided, so it is really up to you to try and find those skincare ingredients that should never be used together, which is the actual purpose of this article.





So, let’s see which effective skincare ingredients you should avoid mixing together or using one after the other.

Retinol with Alpha and Beta Hydroxy Acids

Glycolic and lactic acid, which are AHA Acids, or Salicylic Acid, a BHA Acid, have a strong exfoliant function. Retinol also has exfoliating properties among others. Therefore, these two ingredients should be used separately especially if your skin is sensitive because they can irritate it and trigger dryness.

Nevertheless, there is one more reason that they should not be used together. The enzymes that take part in the conversion of retinol to retinoic acid are much more effective when the pH is neutral. But if you use Alpha Hydroxy Acids as well, the pH becomes acidic and therefore the effectiveness of retinol drastically reduces.

So, it is understood that is better to use retinol and alpha or beta hydroxyl acids separately not only to prevent skin irritation but also to keep retinol’s power intact.

Retinol with Acne Skin Care Products

You might have heard that Salicylic Acid and Benzoyl Peroxide Products are good for acne but did you know that combining retinol with salicylic acid can cause dryness and skin irritation?

Also, while Retinol and Benzoyl Peroxide are two very drastic ingredients to effectively deal with acne, they can deactivate each other’s potency if used together and this combination can also cause dryness, peeling and skin redness.

Retinol with Vitamin C

It is a well known fact that both Retinol and Vitamin C have antioxidant properties and while the presence of two antioxidants in a cosmetic formula usually works synergistically, meaning that one antioxidant boosts the function of the other, this is not the case for retinol combined with vitamin C.

So, instead of these two ingredients harmonically cooperating to fight free radicals, one of the main reasons of skin aging, we get the opposite results and both of these ingredients become less protective for the skin.

Vitamin C with Alpha Hydroxy Acids

Alpha hydroxy acids like glycolic acid, lactic acid or citric acid are able to change the pH of vitamin C, destabilizing it and reducing its antioxidant power.

In addition, since both vitamin C and AHA acids are acidic ingredients, by combining these two, you increase the possibility of getting skin irritation and redness.

Vitamin C and Copper Peptides

Copper peptides are valuable for promoting the creation of collagen and elastin but they lose their power when they come face to face with vitamin C, and the same goes for vitamin C itself.

Therefore, mixing Vitamin C and Copper Peptides should be avoided if we want our product to be effective enough.

Niacinamide with Vitamin C

Niacinamide or Vitamin B3 has anti-inflammatory, skin firming as well as skin whitening properties but when it is used together with Vitamin C, the latter loses all of its anti-aging properties.





For this reason, you should avoid mixing these two ingredients together. You can use first one and after half an hour the other or you can use one in the morning and the other at night.

Exfoliating with Skin Whitening Ingredients

Removing dead cells from the skin by exfoliating it is an absolutely necessary step in our skincare routine, having several benefits such as a smoother, fresh, even toned, bright and youthful looking skin appearance.

Nevertheless, if after exfoliation, you want to use a skin whitening product that works against skin discoloration and you don’t apply a high SPF sunscreen as well, then there is a risk of the photosensitivity of your skin increasing, which can make the discoloration more noticeable.

In conclusion, knowing what skincare ingredients should never be used together is very important if we want to prevent possible skin reactions and benefit from effective skincare products.