I already done do laser co2. when suitable can i use cleanser or scrub?..now aready 1 week after laser. my face now become oily.

Depends: on what type of CO2 laser was used. You can certainly clean your face with a mild cleanser, which should have been recommended by your operator. Don't know what brands you have in your country. Cetaphil is a very good cleanser and has a non oil based moisturizer. You can gently rub the skin beforehand if rough from the treatment. Don't use a scrub though until your skin is completely healed.