The photosensitization corresponds to an abnormal reaction of the skin to the sun. It is the meeting of ultraviolet rays with a photosensitive substance (i.e. reactive to UV) present on the skin (either coming from a cosmetic product or a perfume, or brought into the blood by a drug ). Photosensitivity is manifested by redness on the skin, itching, irritation, and sometimes blisters, which can occur without any particular predisposition and on all skin types, on areas that are sometimes not very exposed to the sun.
Active ingredients to avoid under the sun
Be careful with natural cosmetics which contain plant extracts and/or citrus essential oils (lemon, bergamot, orange, mandarin). For example, aloe vera, known for its soothing properties, can also be photosensitizing in some people, depending on its purity.
the retino l, a very popular anti-aging active ingredient, is also very irritating and therefore contraindicated in the sun. Aerosol deodorants can deposit, because of the “cloud” created at the time of application, particles on the face or other parts of the body and produce, if they contain photosensitive substances, reactions to the sun. As for perfume, it is recommended not to apply it directly to the skin in summer
Before using your usual cosmetic products, it is preferable, when the sun plays its rays, to pay particular attention to their formulation. Exit products containing phototoxic substances, and in particular natural citrus extracts which are often the cause of very unpleasant reactions. Roll-on or solid deodorants tested for phototoxicity allow for gentle targeted application. If in doubt, cosmetics stay in the closet and outings in the sun are done with risk-free products.