We call this one "high porosity," because your hair is highly porous.Ĭonfused? Here's the cheat sheet: Porosity types: On the flip side, your cuticles may be widely spread out and open, making it easy for moisture to flow out of your hair. We call this one "low porosity," because your hair is less porous. Instead, your cuticles may be really tight and close together, making it harder for your hair to absorb moisture. That's where your hair cuticle comes in: Its entire purpose is to keep the peace, opening up to allow some ingredients to absorb or evaporate, and closing down to keep some inside.īut-but!-sometimes, through either genetics or damage, your cuticles don't adhere to the rules of "normal" porosity. It's a delicate balance, and too much of a good thing (even water!) can leave your strands dried-out, weighed down, or damaged.
Your curls needs moisture, oils, and proteins to stay healthy and happy. It's basically the gate-keeper for your hair strand. Even though a strand of hair may look like a smooth tube, it's actually made up of microscopic, flexible layers called cuticles that work like a protective seal to decide how much moisture and oil can penetrate the hair strand. H air porosity is your hair’s ability to absorb and retain hydration, says Mezei Jefferson, assistant vice president of education at L’Oréal USA. And now, I've made it my new life's mission-before I can retire into the wind, obvs-to help anyone with curls or coils figure out their porosity ASAP, so they too can get on my level of happiness. Less greasy and frizzy.īasically, instead of my curls being just "fine," they are officially thriving. And once I switched up my routine, my curls were suddenly.better. But, as it turns out, my 3a hair might need a totally different set of products than someone else's 3a hair, just like your 4b hair might need completely separate treatments from your best friend's 4b hair. This transports the water and all the essential nutrients from the soil to the various parts of the plant which are needed from its growth and maintenance.Like most curly-haired folks, I had based my entire routine around my curl type (3a! Loose curls! Fine!), rather than on my curl's structure. It is a basic process needed for the maintenance and the growth of the plant. This process of sucking of water from the soil, by the roots of the plant may be termed as transpiration pull. Continuous evaporation from stomata of leaves creates suction which pulls up water through xylem vessels. from the roots of the plant till the leaves. When water gets evaporated from the surface of the leaves, in order to meet the requirements of the plant, the water is sucked up from the soil by the roots of the plant and is transported throughout the plant body i.e. In order to fulfil this requirement, plants utilize some other stronger force such as transpiration pull or suction pressure. However, this pressure by itself cannot move the water over greater heights. As a result, there is a steady movement of water into the root xylem creating a column of water, which is steadily pushed upwards.
This creates a concentration gradient, which allows the root hair cells to uptake water actively. Thus, the concentration of water in the root hair is less than the water present in soil particles.
The cells in the root hair are deficient in water because they continuously supply the absorbed water to the stems and leaves. This capillary water, along with the minerals dissolved in it, is absorbed by the cells in the root hair. The capillary water is also present in spaces between the soil particles.
Therefore, water molecules adhere to soil particles with the capillary force. Each soil particle is surrounded by a continuous film of water, loosely held to it by a force known as capillary force. Roots absorb water and mineral salts from the soil. Components of the xylem tissue (tracheids and vessels) of roots, stems, and leaves are interconnected to form a continuous system of water-conducting channels, which reaches all parts of the plant.
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