Coconut oil does not contain protein BUT it does hold protein in, so it's not good if your hair already has too much protein. If your protein balance is good, then it's a great thing! I just got the purification masque too and have the same SM products that you (OP) have, which I love. I haven't used the masque yet but I'll update once I do
high porosity (from coloring)

Shampoo: Mop Top Gentle Shampoo
Co-wash: Chistophe Robin Lemon Cleansing Cream
RO: CJ strengthening, Kenra moisturizing
LI: Jessicurl Aloeba
DT: CJ rehab, Christophe Robin Prickly Pear Mask
PT: SS protein treatment, Ouidad 12 minute
Stylers: Jessicurl RR, SS Firm Hold Gel
Oils: caudalie, sweet almond