Pilot Study of LED for PIE and PIH

This study explores whether LED light therapy using two specific wavelengths (830 nm and 590 nm) can prevent or treat two common skin concerns: post-inflammatory erythema (redness left after a pimple) and post-inflammatory hyperpigmentation (dark spots left after skin inflammation). Researchers will create small, controlled skin reactions on the thigh and then apply LED light at different sessions to see how well it reduces redness and pigmentation. Healthy Asian adults aged 20–65 with Fitzpatrick skin types III or IV (medium to darker skin tones) who have no skin or systemic conditions are eligible. Participation involves attending multiple visits over about 10 days for light treatments and skin measurements, with no expected significant discomfort. This summary was generated by AI to help patients understand the study in plain language.