I wouldn't worry about it! From my experience, glycerin is fine as long as it isn't in your leave-in.
However, because of the acidity, I would not use this product as a regular cowash. I'd use it maybe once or twice a week at the most to avoid damage.
2c/2b with some 2a, coarse, dense, thick, low porosity
Growing out a CL bob. Currently at APL.
CG again as of 7/20/12
Cleanser: BRÖÖ Smoothing I.P.A. Shampoo
RO: Trader Joe's Nourish Spa Conditioner
LI: Kinky-Curly Knot Today
Styler: Beautiful Curls Gel for Wavy to Curly Hair
all-natural products, light moisture, humectants, argan oil
silk protein, synthetic ingredients, heavy oils/products, cowashing