Hyaluronic acid is one of the most versatile ingredients in professional aesthetics — used in dermal fillers, mesotherapy cocktails, and topical serums. Understanding its science helps practitioners select the right formulation for each treatment indication.
What Is Hyaluronic Acid?
Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan found throughout the human body, with the highest concentrations in skin, connective tissue, and synovial fluid. A single molecule can hold up to 1,000 times its weight in water, making it one of nature’s most effective humectants.
Molecular Weight Matters
Not all HA is created equal. The molecular weight of hyaluronic acid determines its penetration depth and biological activity:
- High molecular weight (1,000–1,800 kDa): Forms a protective film on the skin surface, reduces transepidermal water loss (TEWL), and provides anti-inflammatory benefits.
- Medium molecular weight (100–1,000 kDa): Penetrates the upper dermis, stimulates keratinocyte proliferation, and improves skin hydration at a cellular level.
- Low molecular weight (10–100 kDa): Penetrates deeper into the dermis, stimulates fibroblast activity, and triggers endogenous HA production.
Professional formulations combine multiple molecular weights for multi-depth action — a strategy unavailable in most consumer-grade products.
Professional Applications
Mesotherapy
Non-cross-linked HA mesotherapy (skin boosters) delivers HA directly into the dermis via micro-injections. This provides deep hydration lasting 3–6 months and stimulates neocollagenesis. Skymedic’s mesoceutical range includes HA-based cocktails optimised for different treatment areas.
Topical Serums
Medical-grade HA serums use multi-weight formulations combined with penetration enhancers. Applied post-procedure, they accelerate healing and maintain hydration between clinical sessions.
Dermal Fillers
Cross-linked HA dermal fillers provide structural volumisation lasting 9–18 months. The degree of cross-linking, HA concentration, and particle size determine the filler’s rheological properties (elasticity, viscosity, cohesivity) and clinical indication.
Clinical Evidence
Multiple randomised controlled trials demonstrate HA’s efficacy in improving skin hydration (+25–40%), reducing wrinkle depth (−15–30%), and enhancing skin elasticity. Combined with other actives (vitamin C, peptides, exosomes), HA amplifies treatment outcomes through synergistic mechanisms.
Browse our HA mesotherapy products and dermal fillers.
