Can u give me an example of OTC product cleanser contain benoxyl peroxide for pimples in my face?

Lots of choices. There are literally hundreds of benzoyl peroxide products, and at least have of them are cleansers. Panoxyl, topix, clean & clear, neutrogena...The list is endless. In addition you should also get a benzoyl peroxide cream or gel to apply twice a day. And be aware that benzoyl peroxide is a bleaching agent - so don't get it on your clothes, or you'll have permanent white spots!