I am going to go out on a limb here and disagree to this statement.
If you find a cheaper OTC conditioner and look at it's ingredients sometimes you will get lucky and see that they have some really good things in them for your hair. Who's to say that they don't penetrate your hair shaft?
I would never be adverse to mixing up some of my cheap suave conditioner with some olive and coconut oil....apply a heat cap and go to town.
Here are the ingredients listed on a bottle of Suave Naturals Tropical Coconut Conditioner:
Ingredients :
Water (Aqua), Cetyl Alcohol; Tocopheryl Acetate [Vitamin E Acetate]; Freesia Refracta (Freesia Refracta) Extract [Freesia Extract]; Aloe Barbadensis (Aloe Barbadensis) Gel [Aloe Vera]; Cetrimonium Chloride; Fragrance (Parfum); Potassium Chloride; Distearyldimonium Chloride; Disodium EDTA; DMDM Hydantoin; Glycerin; Methylchloroisothiazolinone; Propylene Glycol; Methylisothiazolinone, FD&C Blue No. 1 (Cl 42090), FD&C Green No. 3 (Cl 42053).
While I will agree that many of the latter ingredients listed here your hair could live without some of the former....like the Vit E, Aloe and all the extracts can do wonders for your hair. If you couple this with your favorite hair lovin' oils and apply a little bit of heat I can not see why your hair would not love it no matter how long you choose to sit with it on your head.
Whatever works for you and your hair....there is no right or wrong here
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I totally agree...i always check to make sure it says leave on for 15 minutes or more!!!