Low porosity is when the cuticle of the hair shaft is too compact and does not permit moisture to enter or leave the hair shaft. Hair with low porosity has a tendency to repel product rather than absorb it.
With normal porosity, the cuticle is compact and inhibits moisture from leaving or entering the hair shaft.
Hair with high porosity, also known as “overly porous” hair, has an open cuticle that both absorbs and releases moisture easily.
To determine your own hair’s porosity, grasp a hair strand firmly between your fingers. Slide the thumb and index finger of your other hand from end to scalp (opposite direction as for texture test). If your fingers “catch” going up the strand, or feel like they are ruffling up the hair strand, your hair is overly porous. If it is smooth, you have normal porosity. If your fingers move very fast up the hair strand and it feels exceptionally slick, you have low porosity.
So what happens if you’re overly porous? The expert, Struttswife, recommends the following:
‘Finishing products can sometimes be helpful in helping to keep moisture retained within the hair shaft on a temporary basis, but your best bet is to fill in those gaps if possible with a reconstructor.’
I think I have high porosity issues, especially on the last 3-4 inches or so. I can definitely feel something bumpy or ruffely (is that a word?). My ‘newer’ growth (the first 8-10 inches or so) is much happier. What about you?
It’s weird because I’ve actually been thinking of doing a light protein treatment lately. I’m all about balance, despite my protein sensitivity. Last weekend, on a PJ frenzy, I purchased Aubrey Organics GPB Conditioner- a protein conditioner containing Glycoproteins which claims to strengthen hair fiber, repair damage from salon treatments and restore softness, manageability and shine…all while being 100% natural, and devoid of Wheat Protein, my arch nemesis. I still have highlights on my ends…which is ridiculous. My virgin ends are fine, but my colored ends are fragile. I’ll probably do a mini protein treatment (ends only), and follow up with a moisturizing deep conditioning treatment. As always, I’ll keep you posted!