Once a skin reaction has occurred, it is advisable to use gentle cosmetics to soothe the skin. If you have a choice, opt for fragrance-free products, which are less likely to further sensitise weakened skin. In the case of small blemishes, revert to a simple routine and exclude the offending cosmetic. The imperfections should disappear on their own within a few days. If your reaction resembles irritation, creams containing glycerine or ceramides, active ingredients that help restore the integrity of the skin barrier and the hydrolipidic film while minimising water loss, are recommended.
Some natural ingredients can also act in support to soothe the skin and gradually reduce redness and itching. Notably, aloe vera, oatmeal, and chamomile, whose anti-inflammatory and calming properties have been highlighted in numerous studies. The mechanisms of action involved differ somewhat from one ingredient to another. For example, aloe vera inhibits the release of several interleukins, pro-inflammatory cytokines, while oatmeal reduces the activity of cyclooxygenase, an enzyme catalysing the production of inflammation mediators.
Note : It is not recommended to introduce new cosmetics when the skin has just undergone a skin reaction. In this situation, it is better to turn to the soothing creams that you are accustomed to using. It is not, of course, imperative that your skincare products contain the active ingredients mentioned above to be effective, these are merely examples among others of effective ingredients in case of irritations.