Detailed answer

When someone with allergies comes into contact with a substance they are allergic to, it can trigger an immune response in the body. This immune response can lead to inflammation in the skin, which in turn may delay the healing process of scars. Additionally, allergies can cause itching and scratching, which can disrupt the delicate scar tissue and hinder its fading. It is important for individuals with allergies to take appropriate measures to manage their allergies and avoid any potential triggers that could interfere with scar healing.