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's hair showing a highlighted salon result. The left side is labeled 'BEFORE' with dry, darker brown hair, and the right side is labeled 'AFTER' with lighter, highlighted brown hair.

A side-by-side before and after comparison of a woman's hair, showing a shoulder-length blonde cut with layered ends on the left and a smoother, slightly longer-looking blonde cut on the right. The words BEFORE and AFTER appear in purple at the top of each panel.

Texture of the Repair Leave-In conditioner with ingredients.

rep [repair]Save 25%

Repair Leave-In Conditioner

$38.00 CAD

Save 25% Sitewide

For a limited time, get 25% off all full-price items with code FLASHSALE.

Your Cheat Sheet:

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

How often: Daily, on damp hair before styling
Results: Less frizz, more shine, heat protection
Key ingredients: Ceramide NG, quinoa, chickpea and lentil extracts, apricot and argan oils

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.

From the Blonde Journal How to Repair Bleach-Damaged Blonde Hair at Home

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.

The Science

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3 bottles of Blacklight Blonde Science Repair Products for Blonde Hair including a shampoo, conditioner and mask that are included in a bundle

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Front of jar of Blacklight Blonde Science Repair Mask for Blondes 200ml

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5 stars: 19 (86%)
4 stars: 3 (14%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Excellent résultat autant piur mes boucles que le lissage. Et que dire de son parfum . Je le recommande.

Makes detangling so much easier after washing. My ends feel soft and way less rough.

My hair feels so much softer and easier to brush after using this. Doesnt feel heavy at all.

New favorite leave-in

Honestly wasn't expecting much because I've tried so many leave-ins. This one actually makes my hair soft without leaving that coated feeling.

Doesn't weigh my hair down

I have pretty fine hair so I'm careful with leave-ins. This one feels really light and doesn't make my hair flat or greasy.

So good for frizz

My hair gets sooo frizzy after washing and this has made a big difference. I use it on damp hair before blow drying and it feels really soft after.

Love this for my bleached ends. They feel alot less dry and damaged since I started using it.

My ends needed this

My ends are dry from highlights and heat styling. A little of this after every wash has helped them feel much smoother and less rough.

It’s great

Thanks! Here's to beautiful & healthy hair!

Makes styling way easier

Been using this for a few weeks now and my hair is much easier to brush and style. Love that it has heat protection too.

Great before blow drying

I put this in every time I blow dry my hair. Less frizz, easier to brush and my hair looks way shinier when I'm done.

Not bad but too much for me

I like how soft it makes my ends feel but I have really fine hair and used way too much the first time. Works better for me with just a tiny amount.

Perfect for my thick hair

I have thick hair that tangles like crazy after the shower. This makes detangling sooo much easier and my hair stays soft once it dries.

Really nice leave in and doesnt make my hair greasy. My hair feels smoother and healthier.

It's okay

It definitely helps with detangling and makes my hair softer. I was hoping it would control my frizz a little more though.

A little goes a long way

I've been using it after every wash for about a month and really like it. You don't need much at all, especially if your hair is fine.

Good but expected more

It's a nice leave-in and I like the heat protection. My hair feels smoother after styling, but I haven't noticed a huge difference in my really dry ends yet.

Ive noticed my hair doesnt feel as brittle anymore. Super easy to add to my routine.

It works right away this is a must have

We love to hear it! Thank you for the positive feedback!

Lightweight

I have fine blonde hair and most leave-ins are too heavy for me, but this one is perfect.

So good

I started using and it made brushing so much easier. My hair feels softer, smoother, and less fragile without feeling greasy.

My ends look healthier

My hair feels softer and I�ve noticed way less breakage when styling.

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Repair Leave-In Conditioner

Repair Leave-In Conditioner