Katrina Rosales
Glycolic acid is a powerful skincare ingredient that can leave your skin looking fresh and bright. However, using it incorrectly can do more harm than good. It is an alpha hydroxy acid (AHA) that deeply penetrates the skin to remove dead skin cells and unclog pores. While glycolic acid is generally safe and effective, it is crucial to understand which ingredients should be avoided to prevent negative side effects such as irritation, redness, dryness, and compromised skin barriers. The most commonly recommended ingredients to avoid mixing with glycolic acid include retinoids, salicylic acid, vitamin C, and niacinamide.
| Characteristics | Values |
|---|---|
| Ingredients to avoid mixing with glycolic acid | Salicylic acid, retinol, Vitamin C, niacinamide, lactic acid, benzoyl peroxide |
| Effects of mixing glycolic acid with the above ingredients | Skin irritation, redness, dryness, reduced effectiveness of glycolic acid, compromised skin barrier |
| Recommended usage of glycolic acid | Start with a lower concentration, use once or twice a week, gradually increasing frequency, always monitor skin's reaction |
| Safe combinations with glycolic acid | Hyaluronic acid, azelaic acid, peptides, SPF |
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What You'll Learn
Glycolic Acid and Retinol
Glycolic acid is a popular alpha hydroxy acid (AHA) that is praised for its exfoliating and skin-renewing properties. It is a powerful skincare ingredient that can be found in various products, from face cleansers to overnight serums.
Retinol, on the other hand, is a derivative of vitamin A and is known as one of the most effective ingredients in skincare. It works on a deeper level than glycolic acid to improve the skin's look and feel. It stimulates new collagen production and is often used to help with skin turnover, reducing the appearance of fine lines and wrinkles.
So, can glycolic acid and retinol be used together? The answer is yes, but with caution. Research from 2015 suggests that a combination of the two may work well for treating acne scarring. These two ingredients can complement each other, but they work best at different pH levels. This means that if you apply them one after the other, the second product may alter the skin's pH and hinder the efficacy of the first. Therefore, it is recommended to use them at different times of the day or on alternate days. For example, you can use retinol in your night serum and glycolic acid in your daytime routine or vice versa.
It is important to note that both glycolic acid and retinol are potent ingredients, and combining multiple potent ingredients can increase the risk of skin irritation. Therefore, it is crucial to understand your skin's tolerance and introduce new products gradually. It is always a good idea to consult with a dermatologist and perform a patch test before introducing potent active ingredients into your routine.
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Glycolic Acid and Vitamin C
Glycolic acid is a popular alpha-hydroxy acid (AHA) that is praised for its exfoliating and skin-renewing properties. It can slough away dead skin cells, clear pores, and brighten the complexion. However, due to its potency, it may cause skin irritation, dryness, and sensitivity.
Vitamin C, also known as ascorbic acid, is a potent antioxidant that provides antioxidant protection, enhances skin firmness, and improves skin elasticity. It is sourced naturally from ingredients like kakadu plums and citrus fruits.
When used together, glycolic acid and vitamin C can be a powerful combination for the skin. Vitamin C is essential for collagen production, encouraging new collagen growth and protecting existing collagen. Glycolic acid, on the other hand, helps to remove surface impurities and smooth uneven skin texture, making it a great complement to vitamin C's skin-enhancing properties.
However, combining glycolic acid and certain forms of vitamin C may reduce the effectiveness of both due to their differing pH levels. Glycolic acid has a low pH of 3-4, while vitamin C products typically have a pH of around 3. If used together, the higher pH of vitamin C can increase the pH of the glycolic acid treatment, making it less effective. This combination may also cause skin irritation, redness, and rashes.
To use glycolic acid and vitamin C together safely, it is recommended to start with your glycolic acid product, followed by vitamin C. Allow at least 15 minutes between applications to give the skin time to settle and pH levels to rebalance.
Additionally, it is important to understand your skin's tolerance and introduce new products gradually. Some people may find glycolic acid too intense, especially those with sensitive skin. In such cases, a gentler alternative like lactic acid may be preferred, as it offers similar benefits with a lower risk of irritation, making it a better pair with vitamin C.
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Glycolic Acid and Niacinamide
However, glycolic acid and niacinamide cannot be used together at the same time. This is because glycolic acid has a low pH of 3–4, while niacinamide has a higher pH of around 5–7. If the two are mixed, the niacinamide will increase the pH of the glycolic acid treatment, making it less effective. Additionally, using these two ingredients together can cause skin irritation, such as redness and itchiness.
To still include both glycolic acid and niacinamide in your skincare routine, you can use them on alternate days or at different times of the day. For example, use a product with glycolic acid during the day and a product with niacinamide at night, or vice versa. If you prefer to use them on the same day, it is recommended to wait at least 30 minutes between applications to minimise the risk of irritation.
The easiest way to pair these two ingredients is by using skincare products that are already infused with both glycolic acid and niacinamide. These products are formulated by experts who have carefully balanced the pH levels to ensure the effectiveness of both ingredients. For instance, the L'Oréal Paris Glycolic Bright range includes a daily cleanser and a serum that are enriched with both glycolic acid and niacinamide.
In general, it is important to pay close attention to how your skin reacts when introducing new products or ingredients. Always consult with a dermatologist and perform a patch test before incorporating potent active ingredients into your skincare routine.
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Glycolic Acid and Hyaluronic Acid
Glycolic acid is a popular alpha hydroxy acid (AHA) known for its exfoliating and skin-renewing properties. It can slough away dead skin cells and debris, unclog pores, and promote skin cell renewal. However, it can also be drying or irritating to the skin.
Hyaluronic acid (HA), on the other hand, is a hydrating superstar. It is a naturally occurring molecule in our skin that acts as a humectant, drawing and locking moisture into the skin. When applied topically, HA provides deep hydration, resulting in skin that is not only hydrated but also plump and bouncy.
When used together, glycolic acid and hyaluronic acid can be a powerful combination. The exfoliating properties of glycolic acid help remove the outer layer of dead skin cells, creating a clear path for hyaluronic acid to penetrate the skin more effectively and deliver its hydrating benefits. This combination can result in skin that is not only exfoliated but also deeply hydrated, appearing fresher, smoother, and more youthful.
To incorporate both ingredients into your skincare routine, it is recommended to start with a glycolic acid product, such as a toner or serum, after cleansing. Then, follow up with a hyaluronic acid serum or moisturizer. This ensures your skin receives the benefits of both exfoliation and hydration. It is important to note that everyone's skin is different, so adjust the frequency and concentration of these products to suit your unique skin needs.
While glycolic acid and hyaluronic acid can be used together, it is crucial to introduce them gradually and monitor your skin's response to avoid irritation. Additionally, as glycolic acid can make your skin more sensitive to sunlight, it is generally recommended to use it in the evenings.
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Glycolic Acid and Salicylic Acid
Glycolic acid is a natural organic acid derived from sugarcane and is the most widely used Alpha Hydroxy Acid (AHA) in skincare products. It is a small molecule, which means it can penetrate deeper into the skin, breaking down the bonds that hold dead skin cells together. This process of exfoliation reveals newer, healthier skin cells and gives the skin a more radiant appearance. Glycolic acid is ideal for those seeking to brighten their complexion or address concerns like uneven skin texture, age spots, or hyperpigmentation. It is well-suited for people with dry, dull, or sensitive skin.
Salicylic acid, on the other hand, is a Beta Hydroxy Acid (BHA) derived from willow bark and wintergreen leaves. It is a larger molecule that stays on the surface of the skin. Salicylic acid is oil-soluble, allowing it to penetrate deep into the pores. It is excellent for unclogging pores and reducing sebum production, making it ideal for people with oily, acne-prone, or combination skin. Salicylic acid can have a drying effect, so it may not be suitable for those without oily skin as it may remove too much sebum.
While both glycolic acid and salicylic acid have unique benefits, they can also be used together in certain cases. Products containing both acids can be effective in treating acne and improving overall skin health and appearance. However, it is important to note that mixing these two acids yourself could cause a major reaction and compromise your skin barrier. It is always recommended to consult a dermatologist and perform patch testing before introducing potent active ingredients into your skincare routine.
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Frequently asked questions
Glycolic acid is a popular alpha hydroxy acid (AHA) praised for its exfoliating and skin-renewing properties. It is considered one of the key active ingredients in chemical exfoliation, capable of removing dead skin cells to promote skin cell renewal.
It is advised to avoid mixing glycolic acid with other potent ingredients, such as retinol, salicylic acid, vitamin C, and benzoyl peroxide, as this can increase the risk of skin irritation, redness, dryness, and peeling.
Yes, glycolic acid can be combined with certain actives to amplify its effects. For example, glycolic acid and azelaic acid are effective in targeting various skin issues, such as blemishes and uneven skin tone. Additionally, glycolic acid and hyaluronic acid work together to unclog pores, rebalance sebum, and promote collagen production.
When incorporating glycolic acid into your skincare routine, it is recommended to start with a lower concentration and use it once or twice a week, gradually increasing the frequency as your skin builds tolerance. It is also important to consult with a dermatologist, perform patch testing, and monitor your skin's response to avoid irritation and maximize results.
