The Best Haircare Routine for Low Porosity Type 4 Coily Hair

Before starting your haircare routine, it’s important to know your hair porosity. Hair porosity refers to your hair's ability to absorb and retain moisture. There are three porosity levels: low, medium (normal), and high. Here’s a quick and simple way to test it:

The Float Test:

• Take a clean strand of your hair.

• Drop it into a glass of room-temperature water.

• Wait for about 2–4 minutes.

Result:

• If your hair floats on top, you have low porosity hair - your hair cuticles are tightly closed, and water struggles to penetrate.

• If it sinks slowly, your hair is medium/normal porosity.

• If it sinks quickly, your hair is high porosity - your cuticles are open and absorbs moisture quickly but loses it just as fast. If you have High Porosity Type 3 curly hair, you can follow this➡️ high porosity Haircare Routine here to learn how to properly moisturize, and protect your curly hair.

Once you’ve identified your hair porosity, you need a good healthy haircare routine for your specific hair type. If the float test shows you have low porosity hair, the following routine will help you retain moisture, prevent oily buildup, and strengthen your hair.

Low porosity has closed hair cuticles, making it difficult for moisture to enter. Low porosity curly hair can easily get dry and frizzy because the natural oils from the scalp have difficulty traveling down the curly hair strands, so we need to focus on detangling and deep moisturizing.

The goal of this haircare routine is to open the hair cuticles by using the right product so moisture can get in, and then lock that hydration inside without weighing down your curls. Whether you're dealing with heat damage, chemical treatments from hair dyes, or breakage, this is the best haircare routine for your low porosity curly hair. Let’s go through each step in detail.

Start with a clarifying shampoo that cleans your scalp without stripping away essential oils. Low porosity hair easily builds up residue because products tend to sit on the surface rather than absorb. Cleansing is important to keep your scalp clean and your waves defined.

• What to Use: Choose a sulfate-free, clarifying shampoo with ingredients like apple cider vinegar, or salicylic acid. Avoid harsh sulfates like SLS (sodium lauryl sulfate) and SLES, that can dry out your hair.

• How to cleanse: Shampoo once a week. Use lukewarm (not hot) water and focus the shampoo on your scalp, gently massaging with your fingertips or a scalp scrubber for 1-2 minutes. Rinse with cool or lukewarm water.

• Try These➡️the best shampoos for low porosity curly hair

After shampooing, your hair needs hydration. Low porosity hair needs light, water-based conditioner that adds moisture without weighing down your hair. Use a moisturizing conditioner to moisturize and gently smooth out your hair cuticles to lock in the moisture.

• What to Use: Choose a lightweight conditioner with ingredients like caprylic acid, aloe vera, and glycerin that draw in moisture.

• How to tone: Apply generously from mid-lengths to ends, and detangle your hair gently with your fingers or a detangling brush. Cover your hair with a shower cap and leave it on for 10-15 minutes. For extra penetration, use a warm towel or hooded dryer. Rinse with lukewarm or cool water to seal in the moisture.

• Try These➡️the best conditioners for low porosity curly hair

A leave-in conditioner keep your hair moisturized throughout the day. This is one of the most important steps because it locks in moisture and define your curls and prevents fizziness.

• What to Use: Use a lightweight, water-based leave-in conditioner that contains ingredients like aloe vera, panthenol (vitamin B5), or silk amino acids. Avoid thick creamy leave-ins that can cause buildup and weigh your hair down.

• How to moisturize: Apply to damp hair, focusing only on the mid-lengths and ends of your hair (do not apply directly on your scalp). Distribute evenly using your fingers or a wide-tooth comb.

• Try These➡️the best leave-in conditioners for low porosity curly hair

Low porosity hair doesn’t need heavy oils; instead, use light, easily absorbed oils that lock in moisture without clumping your hair.

• What to Use: Use a lightweight scalp oil or serum once a week. Look for ingredients like tea tree oil (for buildup), peppermint oil (for stimulation), or grapeseed oil (for lightweight moisture)

• How to use it: Apply a few drops of oil or serum to your palms and gently scrunch into your curls, focusing on your ends.

• Try These➡️the best oils for low porosity curly hair

Low porosity curls need lightweight styling products that define and hold your curl pattern. Always use a heat protectant before blow-drying, flat ironing, diffusing or curling your hair. Since low porosity curly hair is prone to damage, always protect it before using heating tools.

• What to Use: Use a curl-enhancing mousse, foam, or light gel for extra hold and curl definition. If you're blow drying or diffusing your hair, always use a lightweight heat protectant spray that can withstand temperatures of up to 450°F.

• How to use it: For best results, apply your styling product while your hair is still damp. Use the “praying hands” method or scrunch your curls upward to enhance definition. Air dry or use a diffuser on low heat. If you style your hair frequently, do low maintenance protective styles like low buns, braids, or twists.

• Try These➡️the best styling tools for low porosity curly hair

• Shampoo

• Deep conditioner (every 2 weeks, followed by regular conditioner)

• Conditioner

• Leave-In Conditioner

• Lightweight Sealing Oil or scalp serum

• Heat Protectant (before blow-drying)

By following these steps, you’ll help your hair retain more moisture and become soft, healthy, and radiant. Remember, consistency is key, stick with this routine for the best results!

• Always use warm water to open your cuticles before conditioning.

• Use a steamer to help products absorb better.

• Avoid heavy butters or waxes that can sit on your hair surface.

• Rinse with cool water after conditioning to seal your hair cuticles.

• Always use a heat protectant to protect your hair from heat damage.

• Use deep conditioner every 2/3 weeks to strengthen your hair.

• Don’t skip conditioner—hydration is important for low porosity hair!

• Sleep on a silk or satin pillowcase to reduce friction and frizzy hair.

• Trim your ends every 8-12 weeks to remove damaged spit ends

• Stay hydrated and eat high protein foods to support hair growth