In people

What people notice is the absence of trouble. The powder clears in well under a minute with a slow swirl. The needle goes in with less bite than plain water gives, which people describe as a cool pressure rather than a sting. Over a four week run the liquid stays glass clear, and that clarity is the thing to watch: cloudiness, floating specks or a change of colour means the vial is finished, whatever the date says. People who mix with plain water and then switch to this one almost always report the same two things, a smaller sting and a vial they stop worrying about.