My sis used to be working as a aesthetician at OA.
The mesotherapy is a non-invasive procedure. Instrument used is something like a vacuum cleaner () with a suction in the middle with electrical pulses and heat at the sides. The suction is to make sure that you skin is sucked up so ampoules used will be concentrated at the area. The electrical pulses and heat will "beat" the ampoules so that they can be absorbed.
It is said to be 100% absorbed, like the invasive ones using needles. (But she said the beauticians will use very little ampoule solutions for trial. And even lesser after package signing. )
TRF is a heat therapy using a saucer-like instrument. They roll it about your face melting fats. The action can't be stopped if not you'll burn. Said to remove eyebags, tighten skin and melt fats.
DPL - Gel applied first on your face to prevent burns. A light the size of a thumb is punched over the skin (face,armpit,brazillian). Said to remove hair and skin rejuvenation. To remove hair, hair pigments must be thick and dark, if not no effects will be seen. The light works only on specific hair colours. (only dark hair). Only then, hair follicles will be destroyed.
That said, caucasions with light blonde hair will not see significant effects.
$1/shot is only for a first trial. They will get you to buy a minimum of $2000 worth of shots (still at $1/shot). For the average face, one needs 46 shots. Per armpit is about $24. Effects can be seen only after 8-10 sessions depending on individuals.