The redness and swelling of the face after the injection is normal, and will usually subside with time. If the redness and swelling is severe, you need to consult a doctor and apply anti-inflammatory drugs as prescribed by the doctor. Hydrographic injection belongs to the injection class of cosmetic skin care therapy, is the local skin injected with special injections, common injections for hyaluronic acid, glutathione, vitamin C, botulinum toxin, etc., in order to achieve hydration, whitening, skin maintenance and other effects. 1. Transient redness and swelling within 24 hours after injection: Because of the invasive treatment, most people will have redness and swelling immediately after the injection, generally after treatment, facial ice packs, good facial care, redness and swelling symptoms will gradually disappear. 2. If the redness and swelling of the face is serious and continues to progress, do not rule out allergies, infections, the need to go to a formal medical institution, you can use antihistamines or anti-infective drugs under the guidance of the doctor. For people with serious redness and swelling of the face after playing hydrafacial injection, it may also be caused by improper local care, trauma and other factors, it is recommended to go to a regular hospital, with the doctor for standardized treatment.