Clindamycin cream and retin a (tretinoin) is enough to treat acne? How long should I wait to see the result?

At least 10-14 days. The combination of the two medications is reasonable for treating acne--depending upon the severity. You will need to use it for at least 10-14 days before you may see an improvement. Remember though, acne can be controlled, but nor definitively cured.

Related Questions

What skin treatments are good for acne marks and I have one slightly slightly depressed acne scar? Any creams? Peels? I'm on retin-a for a 5 weeks

Various. Peels can work over time. Fractional co2 ablation can do wonders to get rid of this scars. Microdermabrasion can help in less severe cases. Very severe cases require surgery oftentimes . Read more...
Laser/excision. If an acne scar is depressed, consideration of local excision or a resurfacing laser treatment might be helpful. Typically, if the scar is deep, peels and creams cannot effectively eradicate the issue. Read more...
Numerous choices. There are a variety of treatments that vary according to the severity of scars: chemical peels, dermabrasion, laser resurfacing, fillers, fat grafting, excision, grafting, etc. Read more...

My pierced left earlobe hole is infected. Will my acne cream/gel, respectively, benzamycin and retin-A work, or is neosporin strong enough?

See dermatologist. This may be a reaction to something applied to it, maybe not infection. DOES IT ITCH?? Throw away the neosporin. It is not only useless against infection, it is one of the most common things people are allergic to. Read more...