Hi, Skinoren can irritate the skin.
stabilized vitamin c low pH, relatively high acidity sharing May cause increased irritation From the normal use of Skinoren continuously. Can irritate the skin to some extent already. The answer is whether it can be used or not. Must be caused by the user's own observation. Keep an eye on your skin's response, even when using Skinoren alone, the user will need to observe the response. especially irritation and adjust the rate/frequency of use to suit each person's skin