 Personally, I wouldn't use this.
Petroleum aka petrolatum is actually a highly effective sealant. If your hair is properly moisturised using a petrolatum-based product on top will compeletly stop any moisture coming in or going out.
But that's where the benefit stops, the same benefit is also a disadvantage because petrolatums and mineral oils leave a heavy film over hair making any following moisturising efforts hard or even completely pointless. Petrolatums and mineral oils have no moisturising ability at all! If your hair is looking sleek and shiny after you use them, it's nothing to do with moisture, these chemicals just happen to be greasy-textured so that glow is purely cosmetic. If you have ever relaxed your hair you will remember vaseline being put round the edges of your hair and on your ears to prevent burns. That is how strong a barrier petrolatum is. Vaseline is pure petrolatum.  Personally, I wouldn't use this.
If petrolatum isn't so good for hair why's it so pervasive in black hair products
Because it is cheap! Should I immediately stop buying anything with petrolatum? Not entirely. I recently learnt from the Science of Black Hair that the higher an ingredient is listed on packaging, the more of it there is inside the product. So if mineral oil and petrolatum are listed quite low down, there isn't much. 
One product that my hair loves but that has petrolatum is my Cantu Shea butter! Petrolatum is about 6th or 7th on the list. The only problem is that even from that you can't tell what percentage of the product is petrolatum.
Personally, I don't think petrolatums and mineral oils are entirely bad. Nothing keeps my lips crack-free like vaseline and when I was a kid good old cheap vaseline kept my skin looking shiny. BUT there is one difference between skin and hair: skin is constantly being rubbed by clothes, people etc so the petrolatum rubs off. Your hair is not being constantly rubbed, if it was you would probably have mega-high breakage rates!
6/9/2014 03:57:53 pm
Very helpful post. I started using petro on my hair this week because shea a mixed with other oils seems to be less effective these days. But I use peppermint, tea tree, and olive oil on my clap. I'm going to try sealing with a castor and shea mixture. My hair is so thick and breaks easy. I just need a solution!
malisa
26/11/2014 05:51:10 am
So its OK to use canyu shea butter or not? Cause that and black castor oil are the only two products I see are being used frequently by many but yet it has protroletum Comments are closed.
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