What cream is good to use for razor bumps and dark spots on private area

Antibiotic: A good antibiotic cream (bacitracin, mupirocin, etc.) should resolve most razor bumps; the dark spots will slowly fade on their own. It's better, though, to prevent razor bumps in the first place by using a single-blade razor, which won't give you as close a shave, but that's the idea; shaving too close is what causes razor bumps in the first place.

Razor Bumps: Benzoyl peroxide or salicylic acid creams are your best over the counter options for treating the razor bumps. For the dark spots, you'll need a fading cream with hydroquinone. The strongest otc hydroquinone is 2%.