I like to mix dry milk and water together in a small container/bowl, so that it is a paste. I like the consistency to be on the thick side. You can adjust to however you prefer. I use this for a facial wash and/or a mask, this is a great soapless wash for the face and body. You can bathe in milk also for an all over skin clarity. Milk aids in the rejuvenation of the skin cells, and is a great skin brightener. What also helps in fading marks are vitamin C,tamarind (derived from Africa and enriched with Vitamin C),lemon, shea butter/soap(derived from Africa) and liquorice extract. Beware of the Black soap it can be strong for some. Depending on your skin sensitivity you may need to see which works for you or maybe adjust the parts, such as 1 part water to 3 parts solution.
Check out my hub on spa days, it has skin care incorporated.