In my experience laser will not get ANY gray hairs. I payed in advance for 18 months of laser treatment from one of the advertisers on this site. After 18 months of increasingly stronger laser treatments ("Surely thistreatment will work"), that ended up blistering my face, I quit. Even though there was a money back guarantee it took me several months arguing with the corporate office, and threats of a suing, before I got my money back. It turned out the owner of the franchise I went to had falsified my records they submitted to corporate to say the treatments had worked.
If you have light hair or grey hair, save your time, money and discomfort and see an electrologist.
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Diana
Sticks and stones may break your bones, but words will break you heart.
Anything essential is invisible to the eyes.