Protein sensitive heads usually react pretty negatively to straight coconut oil...you can try testing it on a small section if you'd like to try it though. It will definitely penetrate if you leave it on long enough, it can take from 6 to 14 hours depending on porosity/how much you apply.

I have very coarse strands and low porosity too, I personally can't use straight coconut oil but my hair is fine with it when it's formulated in a product.
Originally Posted by RizosMio
Okay, learning a lot here.

I had no idea straight coconut oil took that long to penetrate! I tried it once in the shower (before CG) and didn't think I liked it but it's all coming together now. 14 hrs...ain't nobody got time for that!

I've been avoiding products with coconut oil in them and it's been a nightmare since so many have it. It's really helpful to know you can tolerate it in a product. That kind of widens the number of products I've been looking at to try. So, thank you!!
CG since 3/1/13
3B; Low porosity, Coarse, & Extremely Protein Sensitive
Very high density, waist length

Co wash: Suave Clarifying or Sun Ripened Strawberry
RO: Sun Ripened Strawberry, TN, or TN w/ veg glycerin
Sealer: apricot oil
Styler: 4 Naturals Spring Back Custard, Pantene Curl Defining Mousse, or BB "Mudd"
Using a hard water filter, microfiber towel, & silk head scarves & pillowcases

Avoiding: protein, coconut, & parabens