If you’ve got type 4 hair with high density, low porosity, and medium-width strands, these are my top 5 bond and protein treatments that keep my curls strong, resilient, and healthy. Fenty Hair The Comeback Kid Instant Damage Repair Treatment – This versatile treatment can be used as a rinse-out or leave-in, depending on your hair’s needs. It visibly repairs and strengthens all hair types, making it perfect for addressing breakage and damage.  K18 Leave-In Molecular Repair Hair Mask – A leave-in treatment that works on a molecular level to reverse hair damage in just 4 minutes. It restores strength, softness, and elasticity without weighing hair down. Bondbar Bonding Recovery – Formulated with a proprietary Bonding Technology, this treatment repairs and protects hair from the inside out, reducing breakage and improving overall hair health. ApHogee Two-Step Protein Treatment – A salon-quality protein treatment that stops hair breakage and rebuilds hair structure for up to six weeks. Ideal for processed or natural hair needing serious repair. Curlsmith Bond Curl Rehab Salve – An intense pre-shampoo treatment loaded with amino acids that targets all three hair bonds to repair, hydrate, and protect against damage. Especially beneficial for weak, damaged hair.  Top5HairTreatments Type4HairCare LowPorosityHair BondRepair ProteinTreatment NaturalHairCare HealthyCurls HairStrengthening LTKHair LTKBeauty LTKBeauty