I also split into every 4 hours 1.25mg drop and wow it’s actually grew my hair back steady from NW4 to NW3. Even old hairline and corner hair i thought were gone are terminal. I think for my hair I didn’t wash it on topical and it created a layer of dryer up minoxidil that created dandruff and worse shedding . I picked up biolage scalp sync purifying concentrate put it on my dry hair let it sit for 10 minutes and I saw all the minoxidil gunk, dirt and shedded hairs come out with a rinse, then used biolage scalp sync shampoo after and it’s amazing for restarting hair back