Low Porosity Solutions:

Clarify your hair. Low porosity hair is prone to having product build up. Build up + shingle tight cuticles = sad dry hair. Use a clarifying shampoo to remove the build up and give your hair a fresh start.

Deep condition with heat. It is important to open your cuticle a bit to deep condition your hair properly. By using heat you are assured that the cuticle layers will lift so the interior of your strands are moisturized.

Options

Use Indirect Heat.Apply deep conditioner or herbal oil to your hair, covering it with a cap (be sure it is made to withstand heat) and applying indirect heat via hooded dryer.

Use Direct Heat. This is done by applying deep conditioner to your hair and using direct heat from a hair steamer.

Note: Many find these two methods to work wonders. No matter which way you decide to go it is important to deep condition your hair. Once a week is fine for most. Be sure to do so at minimum biweekly to yield the best results.

Use greenhouse/baggy method. The method is done to create a humid environment that forces your hair to absorb moisture. The process is pretty simple. Moisturize your hair as you normally would, cover it with a plastic cap and a beanie/snug fitting hat/hair turban/towel. You can leave your hair wrapped up overnight. You will notice, when you remove the outer layer, that the plastic cap has water droplets inside of it. The droplets form because of the heat rising from your head.