Could a squeeze of acid make gum Dark-Spot removal look better?
Symptom relief
Not yet recruiting
This study tests whether applying citric acid during a procedure to remove dark gum pigmentation leads to better-looking results and faster healing. Adults aged 18 to 50 with natural dark gums will receive either standard depigmentation or depigmentation plus acid. The researcher…
Phase: NA • Sponsor: Dijlah University • Aim: Symptom relief
Last updated Jul 18, 2026 00:00 UTC