Question Summary:
Are we allowed to use Urea found in some heel balms and lotions?

Question Detail:

Are we allowed to use Urea found in some heel balms and lotions?

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh

Urea is impure. It is not permissible to use balms and lotions having urea in them.
 
And Allah knows best
Wassalam
Mufti Ebrahim Desai
Darul Iftaa, Madrassah In'aamiyyah