how much the investment for hair removal laser treatment?

It depends on the area being treated, the density of the treatment area, how the provider has their pricing set up, how good the equipment being used is and whether you just want to thin the area or receive full removal.

Some groups charge per session, some charge in packages of 4-6 treatments and others charge for a package of treatments and give you long term removal guarantees. On average, you can expect small areas to cost $100 per Tx and large areas to cost arond $500 per Tx. If you get multiple areas done at once, most providers will give you a discounted price.

The attached links give you pricing for various treatment areas and offer a list of providers.

You could invest very little and use a do-it-yourself laser hair removal kit.

The Rio uses a safe 808nm diverging laser to treat one hair at a time and can be used in the privacy of your own home. Salon lasers can treat 1cm squared patches of hair simultaneously.

That depends on if they charge by a session or give you a fixed

price.I would phone around to find the prices out.