Hair thermal protection
I have been researching hair thermal protection sprays recently but I don’t understand whether they work at all.
The majority of these products are water-based with some conditioners such as cetrimonium chloride, water-soluble silicones (PEG-8 Dimethicone or Amodimethicone emulsions), film formers (VP/VA or PVP), Propylene Glycol and some proteins for claims.
There are also emulsions (less common) with dimethicone as a 2-3rd ingredient in the list, BTMS or behetrimonium chloride and maybe some non-ionic blends. Plus some humectants and proteins for claims.
I can imagine the emulsion high on dimethicone probably create a film which serves as a thermal protectant, but do these water-based sprays do anything?
Appreciate any input.