Pureology Strength Cure Shampoo — 33.8 fl oz sulfate-free repair for damaged, color-treated hair

Pureology Strength Cure Shampoo is a sulfate-free, vegan shampoo formulated to rebuild weakened, color-treated hair while reducing breakage and sealing split ends.

Designed for hair that’s been weakened by chemical services, frequent heat styling, or environmental stress, this concentrated 33.8 fl oz shampoo targets the structure of damaged fibers to restore resilience and smoothness. It’s color-safe and crafted without sulfates, so it cleanses while helping maintain salon color and improving manageability. Use it as the first step in the Strength Cure system to help hair feel stronger and look shinier over time.

How does this shampoo rebuild damaged hair?

The formula combines gentle cleansing agents with advanced anti-breakage technology to fortify fragile strands. Regular use helps reconstruct the hair’s internal structure and reduces the appearance of fraying ends, leading to fewer snapped hairs during styling.

• Concentrated sulfate-free base cleans without stripping natural oils.
• Anti-breakage technology targets weakened cuticle and cortex areas.
• Designed to work with Strength Cure conditioner and treatments for best results.
• Clinically shown to restore a high percentage of hair’s original strength when used as directed.

Will it protect my color while repairing?

Yes—Pureology’s formula is developed specifically for color-treated hair, balancing repair with color preservation. The gentle surfactants and conditioning agents help lock in pigments so that hair retains vibrancy between salon visits.

• Color-safe, zero-sulfate cleansing to reduce color fading.
• Vegan ingredients chosen to support long-lasting hue and shine.
• Enhances manageability, which helps styling without excessive heat exposure.

How does it address split ends and breakage?

The shampoo works to smooth and temporarily seal the cuticle surface while strengthening from within, which reduces snapping and the visual severity of split ends. While no shampoo can permanently fuse split ends, this product minimizes frizz and breakage so hair looks healthier between trims.

• Sealing agents smooth rough cuticle edges for a sleeker finish.
• Strength-building ingredients improve tensile strength to lower breakage rates.
• Regular use promotes better styling results and less mechanical damage.

How often should I use it and with what products?

Use this shampoo with each wash for best cumulative repair benefits, especially when paired with the Strength Cure conditioner and targeted treatments. For very damaged hair, alternate with deep conditioner or mask treatments as needed to add moisture and intensive repair.

• Daily to every-other-wash use depending on oiliness and styling routine.
• Pair with Strength Cure conditioner for optimal strength and smoothness.
• Use a weekly intensive mask for severely compromised hair fibers.

Who is this for: Pureology Strength Cure Shampoo is aimed at people with damaged, brittle, or chemically treated hair who want to rebuild strength while keeping color vibrant. It suits fine to medium hair textures and anyone seeking a vegan, sulfate-free cleansing option that supports repair, reduces breakage, and improves manageability without stripping hair color.

Ingredients

AQUA / WATER / EAU, SODIUM COCOYL ISETHIONATE, DISODIUM LAURETH SULFOSUCCINATE, SODIUM LAURYL SULFOACETATE, SODIUM LAUROYL SARCOSINATE, COCO-BETAINE, GLYCOL DISTEARATE, GLYCERETH-26, DECYL GLUCOSIDE, COCONUT ACID, SODIUM HYDROXIDE, PARFUM / FRAGRANCE, SODIUM ISETHIONATE, CITRIC ACID, PPG-5-CETETH-20, SODIUM CHLORIDE, DIVINYLDIMETHICONE/DIMETHICONE COPOLYMER, POLYQUATERNIUM-7, AMODIMETHICONE, POLYQUATERNIUM-10, CARBOMER, ACRYLATES COPOLYMER, PEG-55 PROPYLENE GLYCOL OLEATE, PROPYLENE GLYCOL, C11-15 PARETH-7, HEXYL CINNAMAL, BENZOIC ACID, LAURETH-9, BUTYLENE GLYCOL, GLYCERIN, LINALOOL, TOCOPHEROL, OLEA EUROPAEA FRUIT OIL / OLIVE FRUIT OIL, CAMELINA SATIVA SEED OIL, TRIDECETH-12, SALICYLIC ACID, HELIANTHUS ANNUUS SEED EXTRACT / SUNFLOWER SEED EXTRACT, SODIUM BENZOATE, MAGNESIUM NITRATE, BENZYL ALCOHOL, C12-13 PARETH-23, C12-13 PARETH-3, HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL, LIMONENE, ARGININE, 2-OLEAMIDO-1,3-OCTADECANEDIOL, POLY(LINSEED OIL), BENZOPHENONE-4, PHENOXYETHANOL, CITRONELLOL, CI 14700 / RED 4, METHYLCHLOROISOTHIAZOLINONE, SORBIC ACID, HAEMATOCOCCUS PLUVIALIS EXTRACT, MAGNESIUM CHLORIDE, METHYLISOTHIAZOLINONE, CAPRYLIC/CAPRIC TRIGLYCERIDE, POTASSIUM SORBATE, CI 15510 / ORANGE 5