Hyaluronic Acid — Benefits, How to Use & Top Products in South Africa

Hyaluronic acid is the skin's ultimate hydrator. A single gram holds up to 6 litres of water, making it the most effective humectant in skincare. From lightweight serums to rich creams, HA works on every skin type — oily, dry, sensitive, or mature.

What is hyaluronic acid?

Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan found throughout the body — in skin, joints, and eyes. In skincare, it works as a humectant, drawing moisture from the environment into the skin and holding it there. As we age, natural HA levels decline, leading to dryness and loss of plumpness.

Benefits of hyaluronic acid

HA delivers immediate and long-term hydration benefits. It plumps fine lines, strengthens the skin barrier, and improves overall skin texture. Because it is non-comedogenic and fragrance-free, it is one of the few active ingredients suitable for all skin types including acne-prone and rosacea-affected skin. It also supports wound healing and reduces transepidermal water loss (TEWL).

How to use hyaluronic acid

Apply to damp skin — this is critical. HA draws moisture from its environment, so on dry skin in a dry climate it can pull water from deeper skin layers instead of the air, causing dehydration. In South Africa's dry highveld climate, always apply over a damp face or layer a moisturiser on top immediately. Use morning and evening before heavier creams or SPF.

Different molecular weights explained

Not all HA is the same. High molecular weight HA sits on the skin surface, forming a moisture-sealing film. Low molecular weight HA penetrates deeper to hydrate from within. Multi-weight formulas deliver both surface hydration and deeper plumping. Look for products that list multiple forms of HA for best results.

Who should use hyaluronic acid?

Everyone. HA is gentle enough for pregnant skin, reactive skin, post-procedure skin, and teenage skin. It pairs well with retinol, vitamin C, AHAs, and niacinamide without causing interactions. It is the one ingredient that genuinely has no contraindications in normal use.

Top hyaluronic acid products in South Africa

At BeautyOnTApp we stock leading HA formulas from COSRX, ANUA, SKIN1004, and Beauty of Joseon — available online and in all 6 stores nationwide. Not sure which formula suits your skin? Book a skin analysis (R285) for a personalised recommendation.

Related guides: Niacinamide | Retinol | Full Ingredient Glossary