Detailed answer

Allergies to skincare products do not directly cause weight gain. Weight gain is primarily influenced by factors such as calorie intake, physical activity, and overall health. However, some skincare products may contain ingredients that can cause skin irritation or inflammation, leading to temporary water retention in the skin. This can create a slight increase in weight, but it is not a significant or long-term effect. It is important to be aware of any allergic reactions to skincare products and discontinue use if needed, but weight gain should not be a concern in relation to allergies to skincare products.