The media is singing hyaluronic acid’s praises, and the benefits of this ingredient are understood, but what is the science behind all this?

 

Hyaluronic acid is a glycosaminoglycan which is naturally found in the body, however, over time the volume begins to decrease. Examples of areas in the body where hyaluronic acid can be found is in the skin, eyes and fluids of the body. Hyaluronic acid in the body acts as a lubricant between tissues as well as helping with other bodily functions. HA is a humectant which means it is able to attract, bind and retain to water molecules, more than 1,000 times its own weight. This increases the skin’s water concentration levels, and helps prevent  transepidermal water loss, which helps the skin stay hydrated and plump. Dehydrated skin is compromised as the skin’s natural barrier is weak, which increases the risk of infections, acne and more. Hyaluronic acid may even minimise the appearance of ageing in the skin as it helps it look plump. Furthermore, ageing in skin is commonly attributed to a lack of moisture, such symptoms of which can be alleviated with hyaluronic acid, a powerful moisturiser. 

 

There are different types of hyaluronic acid which all have different molecule sizes which all provide alternate levels of hydration. Larger molecules are not able to penetrate deeper layers of the skin and can only provide artificial hydration. Smaller molecules, on the other hand, are not able to absorb as much moisture, although they are able to penetrate the skin.

Hyaluronic acid is certainly a powerful skincare ingredient and is definitely something worth trying.  

 

Sources

F.C. of Simple Skincare Science , 2023. Why Science Says Hyaluronic Acid Is the Holy Grail to Wrinkle-Free, Youthful Hydration. Healthline. 

Julson , E., 2022. 7 Surprising Benefits of Hyaluronic Acid. Healthline. 

Liu, K. & Nassim , J., 2020. The hype on hyaluronic acid. Harvard Health Publishing, Harvard Medical School. 

Papakonstantinou, E., Roth, M. & Karakiulakis , G., 2012. Hyaluronic acid: A key molecule in skin aging. Dermatoendocrinol, 4(3), pp. 253-258.

Radusky, R., 2021. Hyaluronic Acid: Definition, Benefits, and the Best Serums. Everyday Health .