Hyaluronic acid is allergic, but allergic cases are rare. Because hyaluronic acid is a substance existing in human dermis, there is almost no rejection when hyaluronic acid is supplemented. Moreover, hyaluronic acid will be lost like collagen, and hyaluronic acid absorbed through the outside world will also be lost in a few months to several years. Therefore, hyaluronic acid is hardly allergic, and even if it is allergic, it is an individual with abnormal constitution. And even if there is allergy, it will gradually heal itself because of the loss of hyaluronic acid and the adaptation of the body.
Allergic symptoms of hyaluronic acid include redness, itching and swelling, and other common allergic reactions such as fever and papules are not excluded. When you are allergic to hyaluronic acid, you can ask your doctor to prescribe some antiallergic drugs for taking and external application, and there will generally be no major problems.
Generally speaking, hyaluronic acid is safe for human body, but the use effect of hyaluronic acid will also be affected by other factors when skin care or medical beauty plastic surgery is carried out. Therefore, the purchase and injection of hyaluronic acid must choose a formal institution or brand.