However, some people may experience mild side effects such as redness, itching, and burning sensations when first using a product containing hyaluronic acid. These symptoms should subside after a few days of continued use. It is important to note that everyone's skin reacts differently to different ingredients so it is always best to do a patch test before applying any new product on your face or body. Additionally, if you have sensitive skin or allergies it is recommended that you consult with your dermatologist before using any new skincare products containing hyaluronic acid.