After hair transplant dandruff. What should I do now? (Photo)

I agree that you most likely need to give your scalp a good scrub.  i'd use a fine tooth comb to lift the dead skin layer off the top of your head after a good soak in water.  However, a great dandruff shampoo is Nizoral Shampoo.  It attacks the fungus that creates dandruff, M. globosa, and also stimulates hair growth in androgenic alopecia.  

If you have dandruff, consider using an anti-dandruff shampoo. Otherwise see your doctor for an exam and treatment options.

I agree with John Peter Cole, MD Using a comb and soaking the scalp is very useful along with the use of Nizoral.

Dandruff usually appears after a hair transplant, this is normal. You just need to make sure that both the recipient and the donor areas are as clean as possible during the postoperative period so that regrowth can be optimal. So this is very important to scrub the dandruff during the shampoo. Pay attention to use your fingertips, not your nails. You can also apply sweet almond oil in order to soften the dandruff.

This can be a washing problem. This is best treated with a good shampoo made for dry scalp and a conditioner to follow to moisten the skin. Heard and Shoulders works well as a shampoo for dandruff