UPDATE: As of January 2025 - I have tweaked my shampoo bar recipe and am now offering this new and imporved bar which is less prone to breaking. 
 
Solid Shampoo Bar Benefits:
 
Simple and clean formula that gently cleanses the hair and scalp
Made with coconut derived mild cleansing agents
pH Balanced  -  Prevent  brittle hair and a dry scalp by always using pH balanced hair products 
Hydrolyzed Vegetable Protein - hydrolyzed proteins are effective at penetrating the hair shaft and adding moisture and stength to the cuticle. 
Cocoa Butter - helps condition, soften and moisturize the hair
Light clean scent
Zero waste - eliminate all those shampoo bottles in your shower with this one bar
Long lasting - equivalent to 1 to 1.5 bottles of shampoo (if stored properly)
Travel friendly - take this on your travels in place of those tiny shampoo bottles
 
Directions: Wet the bar under warm water.  Massage the bar through your wet hair and on the scalp, working into a soft lather.  Place the shampoo bar back on your shower ledge and with your hands, gently work the shampoo into your hair and scalp.  Rinse thoroughly.  For best results, follow with your favorite conditioner. 
 
Storage: when not using in the shower, be sure to keep the bar out of water on a drying tray, slotted rack or soap tray.  Allow the bar to dry between uses. 
 
Approx: 3.3 ounces