system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What does Anti-Dandruff shampoo do that is different from regular shampoo?
gpt
Pharmacist here. Most common anti-dandruff shampoos contain selenium sulfide which helps decrease the rate of cell turnover AKA slows the rate of your skin flaking off of your scalp, therefore minimizing not only the appearance of dandruff but the amount of flakes that actually fall off. Other anti-dandruff products can also contain active ingredients pyrithione zinc or ketoconazole. The key difference between regular shampoo and these "medicated" shampoos is in the active ingredients.