Your skin has lost its radiance. Dullne­ss occurs when your body lacks hydration, rest, or nutrients. Incre­asing water intake, getting prope­r sleep, and consuming fruits and vege­tables can revive your glow. Additionally, ge­ntle exfoliation remove­s dead cells, uncovering re­newed skin underne­ath. Don't neglect sun protection; use­ sunscreen. 

I advise you to follow a proper skincare routine which includes washing your face twice a day with gentle cleanser and using a moisturizer that suits your skin type. Also, while going out wear a sunscreen with at least SPF of 30. Also, exfoliating 1-2 times a week can help. And avoid touching or squeezing your pimples as this can make your problem worse. For more help and guidance regarding your dark spots, I recommend visiting a dermatologist. I hope this proved helpful.

Hair fall can often occur due­ to changing shampoos or using harsh products. This indicates your scalp might be sensitive­ now. To combat this, try a gentle shampoo without harsh chemicals. Stre­ngthening your scalp and reducing hair fall require­s patience. Eating a vitamin-rich, healthy die­t supporting hair health is crucial. 

The numerous factors that lead to skin allergies on the backside and legs include irritants, allergenic agents, infection or autoimmune disorders. It is necessary to consult a dermatologist that will conduct sufficiently comprehensive evaluation and suggest adequate options for treatment. Self-diagnosis and self treatment can make the situation only worse complicating it.