Front of bottle of Blacklight Blonde Science Repair Leave-In Conditioner for Blonde Hair 100ml

Back of bottle of Blacklight Blonde Science Repair Leave-In Conditioner for Blonde Hair 100ml

Product line chart with four sections labeled HYD, REP, VIO, and BLU, each with a set of bottles and corresponding benefits.

Two bottles of Blacklight Repair Leave-In Conditioner on a beige background with product details.

Before and after comparison of a woman with long hair styled differently.

Before and after comparison of a woman's hair, showing a straightened, smoother, and longer brown hairstyle on the right labeled 'AFTER' against a light gray background.

Hair care product with ingredients listed on a purple background

Woman with long, wavy blonde hair against a plain background

rep [repair]

Repair Leave-In Conditioner

$38.00 CAD

Best For:

Suitable for all hair colors
Damaged, fragile, or weakened
In need of strength, smoothness, and manageability
Prone to breakage, split ends, or frizz

Size: 100 ml / 3.38 fl. oz

FREE GIFT On all orders $75+

FREE SHIPPING ON ALL ORDERS $49+

Easy returns 30 days, no questions asked

A lightweight leave-in conditioner made for all hair types and colors that hydrates and repairs your hair. Reduces frizz and protects from heat damage.

About Repair Leave-In Conditioner

A leave-in conditioner made for all hair types and colors, made for daily use. It helps repair and protect weak, fragile hair. It lightly hydrates your hair while smoothing out damage. It also tames frizz, adds shine, and protects your hair from heat.

How To Use

Apply to clean, damp hair
Comb through to distribute evenly
Style as desired
Use daily or as needed for hydration, shine, and protection

Ingredients

WATER (EAU), CETEARYL ALCOHOL, CETEARETH-20, AMODIMETHICONE, PHENOXYETHANOL, COCONUT ALKANES, POLYQUATERNIUM-55, FRAGRANCE (PARFUM), HYDROXYETHYLCELLULOSE, BEHENTRIMONIUM METHOSULFATE, PEG-12 DIMETHICONE, TOCOPHERYL ACETATE, CETRIMONIUM CHLORIDE, GLYCERIN, HYDROXYPROPYLGLUCONAMIDE, QUATERNIUM-87, PRUNUS ARMENIACA (APRICOT) KERNEL OIL, HYDROXYPROPYLAMMONIUM GLUCONATE, ARGANIA SPINOSA KERNEL OIL, PANTHENOL, RICINUS COMMUNIS (CASTOR) SEED OIL, OLEA EUROPAEA (OLIVE) FRUIT OIL, LINALOOL, COCO-CAPRYLATE/CAPRATE, CAPRYLYL GLYCOL, CERAMIDE NG, LIMONENE, LENS ESCULENTA (LENTIL) SEED EXTRACT, HYDROLYZED CICER ARIETINUM (CHICKPEA) SEED EXTRACT, CHENOPODIUM QUINOA (QUINOA) SEED EXTRACT, TETRASODIUM EDTA, HEXYL CINNAMAL, ALPHA-ISOMETHYL IONONE, CITRONELLOL, TARTARIC ACID, GERANIOL, BENZYL ALCOHOL, CITRIC ACID, SODIUM BENZOATE, SODIUM HYDROXIDE, POTASSIUM SORBATE

FAQs

Repair Leave-In Conditioner

What does the Repair Leave-In Conditioner do?
Think of it as daily protection for your blonde. It hydrates, smooths frizz, strengthens fragile strands, and helps protect hair from heat and everyday stress.

Will it make my hair greasy or heavy?
Not at all. The formula is lightweight, so it nourishes and protects while keeping hair soft, airy, and full of movement.

Does it help with frizz and tangles?
Yes! It smooths frizz and makes detangling much easier, leaving hair silky and manageable.

Does it protect from heat styling?
Yes. It helps shield hair from heat tools and environmental stress while strengthening the hair fiber.

What makes it special?
It’s powered by REP technology with ceramide NG, superfood extracts (quinoa, chickpea, lentil), and nourishing oils to help repair and protect damaged blonde hair.

Still looking for help? View all our FAQs Here

Shipping & Returns

We offer free shipping on orders over $49 across Canada and the Continental United States. Orders below $49 are shipped at a flat rate of $10.

Our team will typically ship your order within 24 hours. When your package leaves our warehouse, you’ll receive an email with your tracking information.

Most customers receive their order within 2–7 business days from the date of purchase, depending on the destination.

Repair Leave-In Conditioner100 ml / 3.38 fl. oz

$38.00 CAD

Sulfate-Free

Paraben-Free

Gluten-Free

See the difference

Damaged and brittle to strong and resilient. Our repair products rebuild hair from within, mending split ends and restoring elasticity with every use.

Before

After

Frequently asked questions

Questions about the Repair Leave-In Conditioner? Find our most frequently asked questions here. Still need help? Contact us.

What does "leave-in" mean, and how is it different from a regular conditioner?

A leave-in conditioner is applied to hair and not rinsed out — unlike a traditional conditioner used in the shower and washed away. It stays on your hair throughout the day (or until your next wash), providing ongoing hydration, frizz control, and protection rather than a one-time rinse benefit.

How do I apply the Repair Leave-In Conditioner?

Apply it to damp or towel-dried hair after showering, focusing on the mid-lengths and ends where hair tends to be driest or most damaged. Since it's a leave-in product, you don't rinse it out — simply style your hair as usual afterward.

Does this protect my hair from heat styling?

Yes, the formula is designed to protect hair from heat, making it a helpful step to apply before using tools like blow dryers, flat irons, or curling irons, in addition to its everyday repair and frizz-taming benefits.

Will this weigh my hair down or make it greasy?

It's formulated to lightly hydrate hair rather than saturate it, so it's designed to smooth and protect without leaving hair feeling heavy or greasy — though as with any leave-in product, using a smaller amount and adding more as needed helps avoid over-application.

Do I still need to use a regular conditioner if I use this leave-in product?

Yes — the Repair Leave-In Conditioner is meant to complement your regular in-shower conditioner (or the Repair Conditioner), not replace it. Use your rinse-out conditioner as usual, then follow up with this leave-in product for extra daily protection and frizz control.

My blonde feels instantly softer and easier to style after using the Repair Leave-In Conditioner. It smooths frizz, adds shine, and keeps my hair feeling strong all day.

— Cristina L.

The Science

A synergistic blend of skincare actives and superfoods

Ceramide NG

A clinically proven skincare active, ceramides repair the structural integrity of hair by sealing the cuticle, locking in moisture. Less damage and breakage, better colour retention and resilience.

Argan Oil

Known as ‘liquid gold,’ argan oil is rich in linoleic acid and vitamin E, replenishing the fatty acids and moisture stripped by bleach and colour to make blonde hair softer, shinier, golden.

Lentil and seed oil icon describing Blacklight Blonde Science hair products

Lentil Extract

Our synergistic superfood complex is hydrolyzed for better absorption, delivering amino acids directly to the hair fibre to reinforce it from within for more resilient, elastic blondes.

Chickpea Extract

Our synergistic superfood complex is hydrolyzed for better absorption, delivering amino acids directly to the hair fibre to reinforce it from within for more resilient, elastic blondes.