There are a lot of variables, from your lifestyle to weather conditions to hair properties. The Devachan salons may well have a controlled environment, air conditioning maintaining a fixed temperature and humidity level. It probably helps having someone style you that can see 360 degrees of your head. Have you seen the before and after threads?
Post your before & After CG pics
Before/After for Wavies
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
CO-wash: Inecto coconut
Treatments: Komaza Matani, coconut oil, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume, Inecto argan
Styler: Umberto Giannini jelly, Boots Essentials gel
Experimenting with: going back to basics