Porosity and Tensile Strength
Increasing porosity of hair has been found to correlate with decreasing tensile strength of the hair. What this means is that as the porosity goes up, it becomes much easier to break the hair. Gaps and flaws in the surface, which allow the hair to absorb much higher quantities of moisture, create stress concentration sites and weakness throughout the strand that cause the hairs to break easily.
What to do? Prevention is the best medicine when it comes to porosity problems.
- Use the right products for your hair.
- Avoid harsh surfactants and soaps.
- Only comb tangles with a wide-toothed comb when hair is wet and saturated with conditioner.
- Avoid chemical processes as much as possible.
- Avoid thermal styling tools.
- Protect your hair from the sun and the elements.
- Get regular trims.
- Treat your hair as gently as you would an expensive cashmere sweater!
If you already have a problem with high porosity, please make sure you have an excellent deep conditioning treatment available, preferably one that contains proteins. Use lots of conditioning and moisturizing products, especially those containing natural, plant-based oils. Avoid all of the sulfate-based surfactants and soap bars. Use a mildly acidic rinse regularly and avoid humectants. If possible, avoid the processes that created the high porosity, and get your hair trimmed regularly. These things should help restore your hair to a more manageable porosity level, but it will take time.
Protect your cuticle!