Are the side effects of Allantoin 0.5% serious?

Allantoin0.5% (Allantoin 0.5%) is a widely recognized skin ingredient that is generally considered relatively mild and safe. The mild nature of allantoin makes it suitable for a variety of skin types, including sensitive skin. Under normal use, it is harmless to most people's skin. However, like all cosmetic ingredients, allantoin may cause adverse reactions in some people and may cause allergic reactions or adverse reactions, including symptoms such as skin redness, itching, stinging or irritation, and dry or peeling skin. If patients experience any symptoms of discomfort after using products containing allantoin, they should discontinue use immediately and consult a dermatologist for further advice.