Yes ,hair's product can expire....
Leave in conditioners do work but are best for on-the-go uses or when your hair is extremely dry. Leave in conditioners tend to over condition your hair.
Hair conditioners are used on the hair after you shampoo it to make the hair soft and easier to comb. They are also used to restore the hair back to it's normal pH and remove soap residue. Conditioners improve the overall strength of your hair and leave your hair shiny and manageable.
Shampoo removes the natural oils from your hair (as well as any dirt). Conditioners help replace these oils.
no
yes
Aveda manufactures different types of conditioners depending on the hair's needs. Aveda conditioners can be found at many spas as well as hair salons.
Moisture rich conditioners.
Look for creamy, moisturizing shampoo/conditioners for dry, curly hair. L'Oreal Elseve, Elvive and Vive are good shampoos and conditioners for dry curly hair.
Penetrating conditioners penetrate the cuticle layer and acts on the coretex.
Conditioners are designed to moisturize and soften hair, which is why they do not typically create bubbles like shampoo or soap. The ingredients in conditioners are not formulated to produce a foamy lather but rather to penetrate and coat the hair to improve its texture and appearance.
The instructions for using conditioners to straighten hair will vary according to product. The best idea is to check out the instructions of a couple of the conditioners and see which is the better item.