Medicines and Products for Dandruff

Dandruff is one of dermatology's most treatable conditions - the right shampoo, used the right way, controls it in most people within weeks. Here is the full product landscape, honestly ranked.

The proven antifungal shampoos (the real treatment)

• Ketoconazole 2% shampoo: the strongest over-the-counter evidence - antifungal, directly suppresses Malassezia; use 2-3 times a week
• Zinc pyrithione: antifungal plus antibacterial, the classic everyday anti-dandruff ingredient - gentle enough for frequent use
• Selenium sulfide: antifungal and slows skin turnover - effective, can slightly discolour dyed or light hair if not rinsed well
• Ciclopirox: prescription-strength antifungal for stubborn cases

The supporting ingredients

• Salicylic acid: a scale-softener - lifts thick flakes so antifungals reach the skin
• Coal tar: slows skin cell turnover - effective but smelly, can stain; less used now
• Tea tree oil (formulated 5% products): one good trial, a gentler option for mild cases

How to use them (where most people go wrong)

• Lather into the SCALP, not just the hair
• Leave on 3-5 minutes before rinsing - contact time is the whole game
• 2-3 times a week for 2-4 weeks, alternate with your regular mild shampoo
• Then weekly maintenance - stopping entirely is why "nothing works long-term"
• If one ingredient stops helping, rotate to another - a normal strategy, not shampoo failure

Prescription territory

• Short courses of steroid scalp lotions for inflamed seborrheic dermatitis
• Stronger antifungals, and occasionally oral antifungals for severe stubborn disease
• Any shampoo not working after 4 weeks of correct use = dermatologist time

Products to be wary of

• "Anti-dandruff" cosmetic shampoos with none of the proven ingredients - perfume and promises
• Harsh daily clarifying shampoos that strip and irritate
• Heavy leave-in hair oils marketed for dandruff - some oils literally feed the yeast

One-line summary

Ketoconazole, zinc pyrithione and selenium sulfide shampoos - massaged into the scalp, left 3-5 minutes, used 2-3 times weekly, then maintained weekly - control most dandruff within a month; everything else is support, and anything unresponsive after that deserves a dermatologist.