usually i get red bumps on my cheeks if the sheetmask that im using is too moisturizing or some ingredients that doest suited my skin (usually the bumps will disappear in 1-3 days in my skin) maybe your skin doesnโt suit nediheak collagen mask,if the other mediheal sheetmask does fine to your skin you can continue the other but Iโll suggest you to stop the collagen one