The protein in gelatin is hydrolyzed collagen protein. This is the same protein used in Aphogee 2-step and Nexxus Emergencee. Size matters with protein, you want hydrolyzed. Amino acids are too small and most food proteins, like egg proteins, are too large. (some experts say large proteins can eventually make their way into hair) The gelatin protein treatment is popular on the Wavy Hair Community and Curltalk. If you decide you like it, you can buy a big box of Knox gelatin at Walmart.
Blow dryer method tips: If you need a hard hit of protein, use the blow dryer version of this PT. IMHO it works as well as Aphogee 2-step,but without the horrible stench. If you do the blow dryer version, start with your blower setting on low. Once your hair has set (like jello) and no longer blows around, you can crank your blower setting up to high. When you try to rinse this PT out, it will seem like it doesn't want to rinse out. Give it a minute or two for the gelatin to rehydrate. Then it will rinse out with a little work. When it is rinsed out, your hair may feel rough or hard. This is normal. A deep treatment will make your hair feel normal again (unless your hair is over proteined).
My Gelatin Protein Treatment Testimonial
My routine before Science-y Hair Blog's gelatin PT was:
Overnight coconut oil prewash every time I washed, spritz and condish method every time, and cowash most days. I did this summer and winter. Even with all this effort, my hair was barely moisturized in summer and almost moisturized in winter.
After doing IAgirl's/Science-y Hair Blog's PT for a few months:
In winter (low to very low dews) I only have to do an hour-ish of coconut oil prewash. I can also skip a day if I want, and I couldn't before. I no longer spritz and condish. My hair is properly moisturized.
In summer (normal dews) I don't use coconut oil very often, I don't spritz and condish, or cowash and my hair is still moisturized. I can also use a less moisturizing conditioner in the summer.
This PT has just made my life so much easier. I was working so hard to keep (or almost keep) my hair moisturized before. Now I feel like I'm off the hair treadmill. I know that the credit goes to IAgirl's/Science-y Hair Blog's PT because I was CG for a year before trying this PT. My hair had already had time to recover from sulfates and heat styling.
Thanks Wendy of Science-y Hair Blog for creating this protein treatment.
My recipe and method for the gelatin PT:
Gelatin PT (My more moisturizing version)
1 tsp + 1/8 tsp gelatin (half packet)
1 T water
1 T honey
1 T oil (half coconut and half olive)
1/2 T conditioner (Renpure Organics, red bottle)
1 T yogurt
(I no longer add citric acid, based on advice from WS. Protein likes a more neutral base.)
Dissolve the gelatin in the water. Add honey and coconut oil so they will dissolve/melt. I warm the water in the microwave. This takes only seconds. Keep an eye on it because it will boil very quickly and can boil over in a small container. Mix in the rest of the ingredients.
To begin with, I shampoo or cowash. Then I towel dry hair and apply PT. I leave this on one hour, but you can leave it less time. Read the original recipe in the above link for more options. Rinse and towel dry. I use either Renpure Organics Conditioner (red bottle) for 10 minutes or Curl Junkie Repair Me (or another DT) for 30 minutes to 1 hour. I only need Repair Me in the dry winter. Rinse and style as usual.