It's easy. You don't have to remove the pill from where it's glued into, just separate the two parts of the head. The head unscrews into two pieces. The bottom contains the pill, the top contains the reflector and lens. Remove the part that contains the pill, and you can either carefully remove the reflector entirely and clean it that way, or leave it in place and blow or flush through the bottom hole in the reflector to remove the particles. If blowing doesn't work, flush with water, shake, and flush with alcohol. Alcohol won't leave any spots like water does.