Serum is one of the care products that can maintain the beauty and health of facial skin. Each type of serum has different active ingredients with their respective uses. When you have various skin problems, the serum used can actually be more than one type. However, can we use a combination of two or more serums at once?
Can we use a combination of two facial serums at once?
Serum is different from moisturizers. According to Dr. Abigail Waldman, lecturer in dermatology at Harvard Medical School, serum formulations are highly concentrated and designed to seep into the skin quickly.
This makes the serum work quickly and optimally to overcome your skin problems. So, can I use a combination of two serums at the same time?
Actually, it’s fine. However, its use cannot be arbitrary. Because every serum contains active ingredients, formulations, and different reactions on the skin.
Carelessly mixing two or more serums, also called layering, can irritate sensitive skin.
Therefore, you must know very well what products are used. The key to using more than one serum at a time is to combine the active ingredients in it.
How to combine serum safely for many skin problems
Not all serums can be used together. For example, two products containing acids should not be combined because their use will increase the risk of skin irritation.
Besides the active ingredients, another thing to note is the formulation. More liquid serum must be used first for perfect absorption. While thicker or oil-containing serum must be used afterward.
You should also not use more than 3 serum products per use. Because too many products can also make absorption not optimal and the risk of irritation is higher.
A combination of two serums that must be avoided
The combined serum must be suitable for your skin problems. But in principle, pay close attention to the active ingredient content. Certain ingredients can cause problems if used together, such as:
Vitamin C and Retinol
Vitamin C serum acts as an antioxidant that can help fight sun damage and pollutants. In addition, vitamin C also helps disguise dark spots and stimulates collagen production to reduce fine lines.
Meanwhile, retinol and retinoids are derivatives of vitamin A which can disguise brown spots and fine lines. However, this active ingredient can make the skin more sensitive to light.
Vitamin C and retinol only work optimally at different pH levels. Vitamin C is formulated at pH less than 3.5 while retinol works best at pH 5.5 to 6.
Therefore, you must use vitamin C and retinol separately, for example, morning and evening. Do not use a combination of these two serums at once.
AHA or BHA and Retinol
Alpha hydroxy acid (AHA) and beta-hydroxy acid (BHA) are compounds used to exfoliate the skin. Both of these active ingredients are also used to even out skin tone.
While retinol is used to treat acne and reduce brown spots, fine lines, and wrinkles.
When used at the same time, both types of active ingredients can cause very dry skin. Very dry skin is not only prone to peeling, but also experience redness and irritation.
Therefore, the combination of two sera between AHA and retinol or BHA and retinol is not recommended for use together. Use only one of them alternately in the morning or evening.
Benzoyl Peroxide And Retinol
Serums containing benzoyl peroxide and retinol should not be used together. This is because the combination of these two products can eliminate each other’s effects.
In addition, retinol should not be used with products containing acids such as vitamin C because it can irritate the skin.