This is a greatly debated question among hairless pet owners.  The reality is that every pet  is different, some are very oily and need baths every week or two.   Mr Wrinkles for example, gets moderately oil and seems to benefit from a bath about every two week.  However, some owners say only once a month and others even say they never bathe their pet.  Regardless of what we, or others say, you know your pet best and it won't take long to figure out what is right for them.  Just be assured that our all natural and pH specific formulas are gentle enough to use as often, or as little, as you like.