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?

http://www.naturallycurly.com/curlta...r-cg-pics.html
http://www.naturallycurly.com/curlta...er-wavies.html
2a-2c, medium texture, porous/ colour treated. Three years CG. Past bra strap length heading for waist.

CO-wash: Inecto coconut/ Elvive Volume Collagen
Treatments: Komaza Care Matani, coconut/ sweet almond/ fractionated coconut oils, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss Ultimate Volume, various Elvive
Styler: Umberto Giannini jelly, Au Naturale styling gelee
Flour sack towel, pixie diffuse or air dry.
Experimenting with: benign neglect