How long after receiving a hyaluronic acid injection (mesotherapy) can I wash my face?
The water light needle treatment mainly uses microneedle injections to deliver nutrients, primarily hyaluronic acid, into the dermis layer of the skin, thereby improving the skin's condition. The general reference price for a water light needle session is 1,600 to 5,000 yuan per session, and visible improvements typically appear after 2-4 weeks. Usually, patients can wash their face 12-24 hours after receiving the water light needle treatment, although the specific timeframe may vary.

If the skin heals well and no significant adverse reactions, such as redness, swelling, pain, or signs of infection occur during the injection process, it is generally safe to gently wash the face with lukewarm water about 12 hours after the water light needle treatment. By this time, the tiny injection wounds should have begun healing, reducing the risk of infection. When washing the face, use gentle motions and avoid vigorously rubbing the face, which could affect the results of the water light needle or damage the skin.
For individuals with slower recovery, it may be necessary to wait approximately 24 hours before washing the face. Wet the face with lukewarm water and gently pat dry using a soft towel—do not rub. A mild, non-irritating facial cleanser can be used, avoiding products containing exfoliating particles or chemical exfoliants.
In daily life, it is advisable to apply sunscreen and avoid direct sunlight after washing the face to prevent pigmentation or skin allergies.