As Dr Justin has rightly pointed out, beauty salons are not allowed to carry out injections/ mesotherapy.
Additionally, many beauty salons administer "skin boosters" with products that are not approved by HSA. I would be cautious as such products and ingredients may be of dubious origin and I personally would not like to have such products administered into my skin/face for safety reasons.
Results will definitely differ based on:
1) Product used
The technology behind Skin Boosters definitely plays a part in the results and longevity. I personally like Juvederm Volite (reputable brand worldwide and the newest skin booster in the market backed by clinical studies) as only 1 session is required and results lasts up to 9 months. Others usually require 3 sessions and may last only 4-6 months.
2) Route of administration
From your query, it does sound like the "Skin Boosters" administered by the beauty salon may very well just be applied to the skin and/or administered superficially to the skin which explains the lack of any downtime at all. This will definitely affect the results and longevity of the outcome.
Skin Boosters provided by clinics on the other hand are administered specifically into the deep skin layer for optimal and longer lasting results.
Hope that helps.
All the best!
