Transdermal patches can be a very precise time released method of delivering a drug. Cutting a patch in half might affect the dose delivered. The release of the active component from a transdermal delivery system (patch) may be controlled by diffusion through the adhesive which covers the whole patch, by diffusion through a membrane which may only have adhesive on the patch rim or drug release may be controlled by release from a polymer matrix. Cutting a patch might cause rapid dehydration of the base of the medicine and affect the rate of diffusion.
After the molluscum bumps have resolved, persistent skin discoloration called hyperpigmentation may be left alone and allowed to resolve over time. Alternatively, residual hyperpigmentation may be treated with prescription fading creams like hydroquinone 4%, kojic acid, or azelaic acid 15-20%. Over the counter fading creams with 2% hydroquinone may be available like Porcelana. Specially designed prescription creams for particularly resistant skin discoloration using higher concentrations of hydroquinone 6%, 8%, or 10% with a retinoid and a topical steroid may also be formulated by compounding pharmacists. Mild chemical peels and microdemabrasion may also help improve discoloration.