Detailed answer

It is highly unlikely for someone to be allergic to all skincare products, as allergic reactions are specific to certain ingredients or compounds. Allergic reactions occur when the immune system mistakenly identifies a substance as harmful. This usually happens due to individual sensitivities or allergies to certain ingredients present in skincare products. It's important to identify the specific ingredient or ingredients causing the allergic reaction through patch testing or consulting with a dermatologist. Once the allergen is identified, it can be avoided in future skincare product selections. Additionally, hypoallergenic or fragrance-free products are often recommended for individuals with sensitive or allergy-prone skin. Consulting with a skincare professional or dermatologist can provide personalized guidance for skincare product choices based on an individual's specific allergies or sensitivities.