In the search for radiant, youthful skin, alpha hydroxy acids (AHAs) and beta hydroxy acids (BHAs) have positioned themselves as key ingredients in dermatological care. These active ingredients not only accelerate the natural cell renewal process, but also address specific skin problems such as premature ageing, uneven texture, and acne.

How does the skin renewal process?

The skin renewal process, also known as cell renewal or desquamation, is essential for maintaining the skin barrier, pro

viding protection against external aggressions and keeping the skin in good health. This process occurs in the outermost layer of the skin called the epidermis. The stratum corneum is the outermost layer of the epidermis and is composed of dead cells that are constantly shed and replaced by new cells that move to the surface from deeper layers of the epidermis.

The rate of cell renewal in the stratum corneum is approximately every 28 to 30 days; however, this can vary depending on age, genetics, state of health and other factors. From the age of 30, this process slows down and together with other factors, the first signs of ageing appear, expression lines, wrinkles, rough texture, even tone, among others, and this is precisely where alpha and beta hydroxy acids come into play.

What are alpha hydroxy acids (AHAs) and beta hydroxy acids (BHAs)?

AHAs and BHAs are chemical exfoliants that promote the removal of dead skin cells from the surface of the skin, facilitating cell regeneration. While AHAs are water-soluble and work mostly on the surface of the skin to improve texture and tone, BHAs are oil-soluble, penetrating deeper into the pores to combat acne and excessive sebum production.

What are alpha hydroxy acids (AHAs) and their benefits?

There are different types of alpha hydroxy acids (AHA's) and they are found naturally in fruits and dairy products, including glycolic, lactic, malic and mandelic acids. Glycolic, malic and mandelic acids have lightening properties, stimulate collagen production which can help reduce the appearance of fine lines and wrinkles, as well as improving skin texture and brightening the face.

What are beta hydroxy acids (BHA) and their benefits?

The best known is salicylic acid which has antibacterial and anti-inflammatory properties, it is also effective in the treatment of acne, penetrating the pores, unclogging them, eliminating impurities and dissolving accumulated sebum. This is a perfect active ingredient for oily and combination skin.

How to Incorporate AHA and BHA into Your Routine?

Incorporating AHAs and BHAs into your skincare regimen can revitalize your appearance, but it's important to do it correctly:

- Choose the Right Active: Consider your skin type and specific problems when selecting products with AHA or BHA.

- Moderate Use: Begin with a low frequency to avoid irritation, especially if you have sensitive skin.

- Sun Protection: These active ingredients can increase sensitivity to the sun, so it is crucial to apply sunscreen daily.