What Does Hyaluronic Acid Do For Skin

Hyaluronic acid (HA), also known as sodium hyaluronate, is a natural glycosaminoglycan contained in the skin itself, which plays multiple important roles in maintaining skin health and appearance. Let me elaborate on its core function as follows.

What does hyaluronic acid do for skin?

Effectively moisturize and lock in moisture

This is the core function of hyaluronic acid.

Hyaluronic acid molecules can bind to more than 1000 times their own weight of water, like a “water molecule sponge”, absorbing moisture from the environment and firmly locking it in the skin.

Hyaluronic acid can penetrate into the stratum corneum of the skin, increase its moisture content, improve dryness and roughness, and keep the skin soft and delicate.

For different skin types (such as dry, normal, and oily), hyaluronic acid can regulate water oil balance: dry skin replenishes moisture, and oily skin reduces excessive oil production caused by dehydration.

Maintain skin elasticity and plumpness

Hyaluronic acid is the “matrix” of collagen fibers and elastic fibers in the dermis layer of the skin, which can support the skin structure and keep the skin tight and elastic.

As age increases, the content of hyaluronic acid in the skin gradually decreases (starting to decline after the age of 25), leading to weakened skin support and the appearance of sagging and wrinkles (such as fine lines and dry lines). Supplementing hyaluronic acid can help restore skin plumpness and fade early wrinkles.

Repair barriers and enhance skin resistance

A healthy skin barrier depends on the moisture content and structural integrity of the stratum corneum. Hyaluronic acid can replenish the moisture of the stratum corneum, strengthen the barrier function of the stratum corneum, and reduce the stimulation of the skin by external factors such as ultraviolet radiation, pollution, and temperature differences.

For sensitive and damaged muscles (such as redness and flaking caused by weak barriers), hyaluronic acid can help alleviate discomfort and promote barrier self repair.

Assist in the absorption of other components

The moisturizing properties of hyaluronic acid can keep the stratum corneum of the skin in a hydrated state. At this time, the skin’s absorption efficiency of other functional ingredients (such as vitamin C, niacinamide, retinol, etc.) will be higher, indirectly improving the overall effect of skincare products.

Hyaluronic acid with different molecular weights has different effects

The effect of hyaluronic acid is related to its molecular weight, and different molecular weights are often compounded in skincare products to exert synergistic effects:

High molecular weight HA: It stays on the surface of the skin, forms a protective film, reduces water evaporation, and is suitable for immediate moisturizing and relieving dryness.

Medium molecular weight HA: penetrates into the superficial dermis, replenishes moisture, and enhances skin elasticity.

Low molecular weight/oligomeric HA: Oligo Sodium Hyaluronate can penetrate deep into the dermis layer, promoting the synthesis of hyaluronic acid and collagen in the skin. Long term use can help improve the skin’s condition (note: Low molecular weight HA has strong penetration ability, sensitive muscles need to choose the concentration carefully).

Is hyaluronic acid ok for daily use?

Hyaluronic acid can be used daily and is a very suitable ingredient in skin care products for long-term daily care, especially as a core ingredient for basic moisturizing.

Basic demand adaptation: The skin’s moisturizing need is daily and continuous. The core function of hyaluronic acid is to hydrate and lock in moisture, providing stable moisture support for the skin and preventing problems such as dryness, roughness, and unbalanced oil secretion caused by lack of water.

Strong compatibility: It is mild in nature and almost suitable for all skin types (dry, oily, normal, combination, sensitive skin, etc.). When combined with other ingredients (such as vitamin C, niacinamide, retinol, etc.), it is less likely to cause conflicts and can be integrated into various skin care routines (morning/evening care, pre-makeup moisturizing, etc.).

Non-dependence: The skin itself synthesizes hyaluronic acid. Exogenous supplementation will not inhibit its own synthesis. Long-term use will not cause “dependence”, but instead can help maintain the skin’s moisture balance.

Hyaluronic acid is the “natural moisturizing factor” of the skin, which maintains the healthy state of the skin from the foundation by moisturizing, locking in water, supporting structures, repairing barriers, and other functions. Whether it’s daily moisturizing care, anti-aging, or repairing sensitivity, hyaluronic acid is a versatile ingredient in skincare products that is suitable for most skin types and age groups.