Here's a thread I started a few years ago. At the time, people really scared everyone away from using protein.

For me, it's not a feel, it's a "look." Protein helps define my curls, gives volume and reduces frizz. I do at least one PT a week and use a lot of products with protein. My hair never met a protein it didn't like!

In the summer, I always do 2 PTs a week--CJ Repair Me or SS Protein Moisture Repair for the first and the Elucence one for the second. A few winters ago, I tried to go every ten days between PTs. My hair didn't look as good, so it's once a week when the dewpoint is REALLY low and twice a week the rest of the year.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Aloe Fix