How can I manage hard and blackish cracks on my palm?

Hi,

Welcome to icliniq.com.

From the description provided, it seems that you could be having eczema or psoriasis.

Right now, just use a good emollient over hands multiple times a day and apply Cosvate G cream (a combination of Clobetasol propionate and Gentamicin sulfate) two to three times over hands.

Further management would depend upon the response and the exact underlying cause of the disease.

Also, use a mild soap to wash your hands. Avoid exposure to detergents, hard soaps, chemicals, etc.

Visit a dermatologist in person for a physical evaluation and further management.

I hope this information helps you.

Feel free to ask further queries.

Thank you.