The hairless variety of the Chinese Crested is genetically dominant to the Powderpuff, and because all Chinese Cresteds carry the recessive gene, it’s not possible to “breed out” the Powderpuffs.
Both “hair types” of the breed require grooming, and it all depends upon the amount of hair the dog has. There is a true hairless and a “hairy hairless” (you can read about both of them here), and even they benefit from regular grooming. Hairless Chinese Cresteds often have their faces and ears shaved for neatness, and because their skin is very similar to our own, it can be prone to blackheads and whiteheads, so proper skin care is important.
The Powderpuff has a fine double coat that requires daily brushing to prevent matting, and interestingly, the PowderPuff’s coat does not continuously grow. Once it reaches its full length (which can get quite long), it stops growing. Once it is cut, however, it resumes growing.