My cheeks become red, hard & itchy when I apply any fairness cream or use face wash continuously after I was affected by bleach?

It sounds like you are experiencing a skin sensitivity or possible allergic reaction, likely due to the bleach and possibly other products. Here are some steps you can take to help restore your skin's health:

Avoid Irritants: Discontinue using any products that cause redness, burning, or irritation. This includes fairness creams and harsh face washes.

Gentle Skincare Routine: Use a gentle, fragrance-free cleanser and a moisturizer designed for sensitive skin. Look for products with soothing ingredients such as aloe vera or chamomile.

Patch Test New Products: Before applying any new product to your face, perform a patch test on a small area of your skin to ensure there is no adverse reaction.

Sun Protection: Use a broad-spectrum sunscreen with an SPF of at least 30 to protect your skin from further damage and prevent hyperpigmentation.

Consult a Dermatologist: Since your symptoms persist, it would be beneficial to see a dermatologist. They can provide a proper diagnosis and may recommend treatments such as topical steroids or prescription medications to help reduce inflammation and repair the skin barrier.

Hydration and Diet: Keep your skin hydrated by drinking plenty of water and maintaining a diet rich in antioxidants and omega-3 fatty acids, which can support skin health.

Avoid Bleaching Agents: Avoid using bleach or similar harsh products on your skin in the future to prevent recurrence of these symptoms.

Taking these steps can help soothe your skin and promote healing. However, professional guidance from a dermatologist is the best course of action for tailored advice and treatment options.