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Understanding Hair Porosity: What Makes Your Hair Low, Medium, or High Porosity?
At True to Life™, we believe every strand of hair tells a unique story, and your hair’s porosity is one of the most important parts. Hair Porosity is how easily your hair absorbs and holds moisture, and it’s the reason some routines work beautifully for your friend but not for you.
In this guide, you’ll learn what low, medium and high porosity really mean, and how to match your hair to a routine that finally makes sense.
Not sure what your porosity is?
In 2–3 minutes, our Hair Assessment helps you understand your porosity, scalp needs and hair goals – then builds a personalised, plant‑based formula and routine for you.
What Is Hair Porosity (In 30 Seconds)?
Hair porosity is how easily your hair absorbs and holds onto moisture.
- Low porosity: Tightly packed cuticles – water and products sit on top, build‑up is common.
- Medium porosity: Cuticles are slightly open – moisture goes in and stays in fairly well.
- High porosity: Cuticles are very open or damaged – moisture rushes in then escapes, leading to dryness and frizz.
When you understand your porosity, you stop guessing and start choosing products that actually work for your hair.
High Porosity Hair
High-porosity hair allows moisture to enter quickly but struggles to hold onto it, often leaving it dry or prone to frizz.
How to know you might have high porosity
- Hair drinks up products quickly but still feels dry
- Prone to frizz, especially in humidity
- Breaks or splits easily
- Air dries very quickly
Care tips for high porosity hair
- Focus on rich, moisture‑locking conditioners and masks
- Use protein‑balanced products to strengthen fragile strands
- Seal in moisture with oils or creams
- Be gentle with heat and chemical treatments
Why hair becomes high porosity
- Chemical Damage: Frequent treatments like bleaching, relaxing, or coloring lift the cuticles, making hair more porous.
- Heat Damage: Excessive heat styling without protection weakens the cuticle layer, creating gaps and cracks.
- Environmental Stressors: Sun exposure, humidity, chlorine, and pollution degrade the cuticle, leading to moisture loss.
- Mechanical Damage: Over-brushing or tight hairstyles disrupt the cuticle structure, causing breakage.
- Imbalanced Hair Care: Neglecting moisture and protein treatments leaves hair fragile and porous.
- Genetics: For some, high porosity is inherent, with naturally open cuticles prone to rapid moisture loss.
True to Life™ for High Porosity Hair
Our Hair Assessment looks at your porosity, scalp condition and goals (like growth or strength) and builds a routine that:
- Gently cleanses without stripping
- Deeply hydrates and supports the cuticle
- Helps you lock moisture in for longer
Medium Porosity Hair
Medium porosity offers a healthy balance, absorbing and retaining moisture well. This hair type is often manageable and versatile, responding well to most products.
How to know you might have medium porosity
- Hair holds styles well without a lot of product
- Air dries at a moderate speed
- Generally feels soft and healthy
- Responds well to most moisturisers and treatments
Care tips for medium porosity hair
- Keep a balance of moisture and protein
- Avoid over‑loading with heavy butters/oils
- Maintain regular trims and gentle handling
Why hair is medium porosity
- Genetics: Some individuals naturally have cuticles that are moderately lifted, balancing moisture absorption and retention.
- Moderate Treatments: Occasional chemical and heat styling can slightly lift the cuticle, enhancing product absorption without damaging the hair.
- Routine Maintenance: Regular moisturizing and protein treatments support the cuticle’s moderate structure.
- Environmental Exposure: While exposed to environmental stressors, the cuticles remain intact with proper care.
- Balanced Product Use: Hair remains healthy without heavy buildup, thanks to tailored care with moisture-rich and protein-based products.
True to Life™ for Medium Porosity Hair
Our Assessment helps you maintain that healthy balance with a tailored shampoo, conditioner, scalp oil and treatment – so your hair stays resilient, shiny and strong.
Get the Hair Porosity Guide
Download our hair porosity guide so you can learn more about how to care for your hair’s porosity.
Low Porosity Hair
Low porosity hair has tightly bound cuticles, making it resistant to moisture absorption. While this type of hair can appear healthy, it often struggles with product buildup and dryness.
How to know you might have low porosity
- Water beads up and sits on top of your hair
- Products feel like they sit on the surface and cause build‑up
- Hair takes a long time to air dry
- Can feel dry or stiff even when you’re moisturising
Care tips for low porosity hair
- Use lighter, water‑based products to avoid build‑up
- Clarify gently to remove product layers
- Apply products to damp, warm hair to help the cuticle open
- Avoid heavy silicones and butters that just sit on top
Why hair is low porosity
- Genetics: Naturally low porosity hair has flat, tightly packed cuticles that repel water.
- Minimal Chemical Processing: Untreated or minimally processed hair tends to maintain low porosity.
- Healthy Cuticle Structure: Avoiding chemical and heat damage helps retain the cuticle’s tight structure.
- Lifestyle and Environmental Protection: Limited exposure to sun or pollutants supports low porosity hair.
- Product Buildup: Heavy oils or silicone-based products can coat the hair shaft, further blocking moisture absorption.
- Natural Sebum Production: High sebum levels can form a natural barrier, reducing moisture penetration.
True to Life™ for Low Porosity Hair
With our Assessment, we recommend lighter, build‑up‑conscious formulas that still nourish your hair – without weighing it down or blocking moisture.
Do Your Hair Porosity Test
Want to try a quick porosity test at home?
Watch the video below to see how to check your hair using simple steps.
But don’t stop there.
Our True to Life™ Hair Assessment goes deeper – looking at your porosity, scalp condition and hair goals to build a complete routine.
Real People, Real Hair Progress
What To Do Next (Without Guessing)
Understanding your hair’s porosity is the first step. The next step is matching it with a routine that respects your scalp, your strands and your lifestyle.
Instead of buying another “hope this works” product, take our simple Hair Assessment. In just a few minutes, you’ll:
- Get clarity on whether your hair behaves like low, medium or high porosity
- Receive a personalised, plant‑based formula and routine for your scalp and strands
- Stop wasting money on products that were never made for your hair
No matter your hair type or porosity, at True to Life™ we believe beauty lies in embracing your individual journey – because your beauty is true.
