Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan in the dermis of human skin. 1 gram of HA can bind about 6 liters of water and has a strong water-retaining capacity. With age and environmental factors, the HA content in the skin gradually decreases, leading to dry skin, reduced elasticity and the formation of fine lines.

Water light injection is a medical beauty technology, formally known as "mesoderm therapy". This technology uses a special multi-needle syringe (usually containing 5-9 needles) to inject hyaluronic acid and other active ingredients directly into the dermis. Core features include:

• Breaking through the skin barrier: delivering substances directly to the dermis.

• Customizable formula: the basic ingredient is non-cross-linked hyaluronic acid, vitamins, minerals, etc. can be added.

• Precise feeding: the injection depth is usually 1.0-1.5 mm (middle and lower dermis).

I. Objective effects of water light needles

1.Instant hydration: The injected hyaluronic acid immediately increases the water content of the dermis.

2.Continuous improvement: Stimulate fibroblast activity and promote collagen synthesis (requires multiple treatments).

3.Synergistic effect: The compound formula can target pigmentation, photoaging and other problems.

II. Medical precautions

1.Medical behavior attributes: Skin-breaking operations must be performed by practicing physicians in medical institutions.
2.Metabolic cycle: Non-cross-linked hyaluronic acid remains in the body for about 2-4 weeks and needs to be treated according to the course of treatment (initial 3-5 times, 2-4 weeks apart).
3.Common reactions: Erythema, swelling, and pinpoint bruises may occur 24-48 hours after surgery.
4.Potential risks: Including infection, allergic reaction, vascular embolism (rare).

III. Selection criteria

1.Institutional qualifications: Check the "Medical Institution Practice License" and the physician's practice certificate.

2.Product certification: Use hyaluronic acid preparations approved by the National Medical Products Administration (NMPA).

3.Rational expectations: The effect of a single treatment lasts about 1-2 months, and the maintenance period after 3 courses of treatment can reach 6-12 months.