Everything you Need to Know About High Porosity Hair

by Gaia Tonanzi
High porosity hair is commonly the most damaged of all the porosities. Unlike the other two porosity types, the hair cuticles are very open which leads to dryness. When hair becomes too dry, curls can become prone to damage and require special products to help restore their health and bounce. Understanding the best haircare routine for your hair type can be the difference between locks you like and locks you love. We explain the signs to look out for, as well as which products are best for you and your curls. 


High porosity hair is characterized by a very open cuticle structure. Cuticles are the little scales that cover the outside layer of the hair’s surface. They control how much moisture can penetrate into and leave the hair shaft. In the case of high porosity hair, they are wide open, which means that the moisture can easily reach inside the hair shaft. However, as easily as the moisture entered in, it can flow out again, making the hair dry. This can make the hair appear frizzy, and makes it more prone to hair damage.

how to care for high porosity hair


Each hair porosity type has its own unique characteristics, knowing how high porosity hair behaves can help you to work out if your hair falls within this category.

  • To test for high porosity hair you can spray some water on a clean, product-free strand, the water will instantly sink into the hair shaft if it is high 
  • The hair instantly becomes wet when under the shower
  • The hair dries very quickly
  • Light products don’t moisturize enough
  • There is lots of frizz and the hair tangles very easily
  • The hair takes color very easily and it can be stained even by semi-permanent dyes

As with all hair types, a different approach is required to rejuvenate and restore your hair to its very best. 


When it comes to high porosity hair the main focus with care is ensuring it is given the moisture it needs, and providing strength with proteins to ensure the moisture can stay inside the shaft. Doing this can ensure your tresses retain the right protein moisture balance. Here are our top tips for caring for high porosity hair.

  • Do your final rinse with cold water to close the cuticles and help maintain moisture
  • Use richer products that provide high levels of moisture
  • Try a multi-step routine by layering several products
  • Seal the moisture in with a serum
  • Use plenty of protein-rich products to help restructure the cuticle layer


To restructure the protein hair bonds in damaged, high porosity hair, you need to regularly use a bonding treatment such as our Bond Curl Rehab Salve. This special product targets the weakened bonds of the hair, strengthens and repairs hair to reduce hair breakage and also helps to protect hair from future damage.

Additionally when it comes to looking after high porosity hair, it is essential to nourish it with moisture. You want to use sealing products that prevent water from leaving the hair shaft. Using the liquid, oil, cream method is a great way to do this. This involves hydrating the hair with water, sealing it in with an oil, and then smoothing the cuticles with a cream. Although this sounds like a lot of steps to reach gorgeous hair, we have combined all three steps into our Oil-in-Cream which is a leave in conditioner. Smooth onto wet hair, and you’ll be left with non-greasy, non-crunchy luscious curls.

If your hair needs more, you can get an additional protein boost from our two versatile stylers, Feather-light protein cream and Bouncy Strength Volume Foam.

To finish it all off, once the hair is completely dry you can seal the moisture in with our Intense Treatment Serum. Use just a pea-size amount melted in your hands to lock moisture in.


High porosity hair has the loosest cuticles of all the hair types. It allows moisture in and out of the hair shaft very easily, which often causes it to become dry. Low porosity hair suffers the opposite issue. Whilst it can be difficult to get moisture into the tightly packed cuticles of this type, once it’s in there it becomes difficult for it to leave, making the hair more hydrated. Medium porosity hair sits in the middle of these two types. Its cuticles are looser than low porosity, but tighter than high porosity. This in-between means that moisture can more easily move into the hair and leaves at a slower rate.

What Makes Curlsmith Unique? 

Our gourmet haircare range is made from natural ingredients and kitchen cupboard staples. Our formulas have been developed in collaboration with leading trichologists and curly hair stylists. The Curlsmith range includes conditioners, shampoos, and hair treatments that your curls will love from day one.