In health store person said that acne starts from buidl up of toxins in digestive system. told me to take a colon cleanser and it will cure it.

I know you have to take probiotics also, when would u take those?

I was wondering, is there a safe supplement I can take to do a home colon cleansing that I can get from GNC, Vitamin Shoppe, etc (or a local health store in Orange County, CA)? I don’t want to order any product over the internet. Also, how long does it usually take to work? Can I do it all in one day? Because I am on meds that I have to take everyday, and I’m sure it would flush the meds out of my system, but if I could do it in the morning anad take my meds by night it should be fine. I don’t want to have a colon irrigation procedure, so I’m looking for a safe home alternative. Thanks!!