What should you know about No7 hyaluronic acid?

Hyaluronic acid attracts and holds water. In skincare, it is spread over the skin and may reduce the feeling of dryness or tightness. The product does not reach a painful knee, shoulder, or tendon through the skin.

An injection is a clinical procedure selected for a particular diagnosis and treatment site. It uses a medical formulation and requires assessment of benefits, alternatives, and possible reactions; a cosmetic serum cannot substitute for that decision.

Use the No7 product as its label directs, preferably on clean skin, and follow with a moisturiser if needed. Introduce it cautiously when using other active products. Stop and seek advice if swelling, hives, marked irritation, or eye symptoms appear.

For orthopaedic questions, read about [Hyaluronic Acid](/materials/hyaluronic-acid/) and [Hyaluronic Acid Injection](/treatments/non-surgical-orthopedics/hyaluronic-acid-injection/).

Arrange medical assessment for ongoing joint pain, locking, instability, or swelling after an injury. Seek urgent help for breathing difficulty or rapidly spreading facial swelling after applying any product.

Ask whether your symptoms need examination or imaging, whether an injection fits the diagnosis, and which skin ingredients or medicines should be avoided together.