Small white particles on the chin are usually whiteheads acne, lipoma, warts, folliculitis and so on. 1. Whitehead acne: small white particles appear because the sebaceous gland ducts of hair follicles can form rashes when they are blocked by oil and other substances. 2. Lipoma: When fat cells proliferate, small white particles can appear on the chin. 3. Warts: Due to the infection of human papilloma virus, these viruses can damage the skin and lead to skin hyperplasia, so small white particles can be formed. 4. Folliculitis: due to the blockage of hair follicles, the hair follicles undergo an inflammatory reaction, and small white particles can also appear. Finally, please seek medical attention for the appearance of small white particles on the chin.