Curly, Resistant Hair
Permanent straightening with a smooth, sleek and frizz-free finish.
Bio Sleek Professional Straightening Treatment
Permanent Straightening. Sleek, Frizz-Free Results.
Bio Sleek is a professional organic straightening treatment that delivers permanent results while protecting and nourishing the hair. It straightens the hair, removes frizz completely, reduces unwanted volume, and leaves the hair sleek, shiny, and manageable for up to six months.
99% Permanent Straightening Results
Designed to straighten curly, wavy, and resistant hair.
100% Washable Treatment
Fully rinsed before blow-drying and flat ironing, with no product residue left on the hair.
Hydrolyzed Keratin & Germ Oil
Helps leave the hair smooth, shiny, soft, and manageable.
Formaldehyde-Free & PPD-Free
No smoke or harsh fumes during the professional service.
One-Time Flat Iron Correction
A one-time correction may be performed after the client’s first wash when needed.
Suitable for Kids 10+
Also suitable for pregnant and breastfeeding women according to your professional product guidance.
Available to licensed professionals only.
Professional Use
Licensed stylists only
Education Included
Step-by-step professional guide
Free USA Shipping
On orders over $150
Best for hair types
- Natural, wavy, or curly hair
- Frizzy or unmanageable hair
- Clients who want long-term straightening without toxic fumes
- Hair colored up to level 7
Ingredients
Aqua, Glyoxyloyl Carbocysteine, Glyoxyloyl Keratin Amino Acids, Propylene Glycol Dibenzoate, Cetearyl Alcohol, Behentrimonium Methosulfate, Cyclopentasiloxane, Dimethiconol, Dimethicone Crosspolymer, Ceteareth-20, PEG-90M, Cetrimonium Chloride, Argania Spinosa Kernel Oil, Benzyl Alcohol, Salicylic Acid, Glycerin, Sorbic Acid, Polyquaternium-37, Lanolin Alcohol, Parfum, Stearyl Alcohol, Dimethicone, Acetamide MEA, Hydrolyzed Keratin, Panthenol, Sorbitol, Sodium Cocoyl Collagen Amino Acids, Cocoyl Sarcosine, Triticum Vulgare Acid, Triticum Vulgare Germ Oil, Linolenic Acid, Linoleic Acid, Tocopherol, Simmondsia Chinensis Seed Oil, Tocopheryl Acetate, Hydrolyzed Glycosaminoglycans, Polysorbate 20, Polysorbate 80, Hexyl cinnamal, D-Limonene, Linalool, Benzyl salicylate
Bio Sleek Professional Straightening Treatment
Sale price$150.00
Choose options
Organic Formula
Professional straightening without formaldehyde, smoke, or harsh fumes.
Permanent Straightening
Straightens curly, wavy, and resistant hair with long-lasting results.
100% Washable Treatment
The treatment is fully rinsed from the hair before blow-drying and flat ironing, leaving no product residue behind.
Results Up to 6 Months
Long-lasting straightness with proper professional application and home care.
Real Transformation
Bio Sleek Before & After Results
See the sleek, straight and frizz-free finish Bio Sleek can create on different hair types.
Thick, Frizzy Hair
Straight, shiny and manageable hair with complete frizz removal.
Wavy, Color-Treated Hair
A sleek, polished result with long-lasting straightness and shine.
Results may vary depending on the client’s hair type, condition, application technique and aftercare.
Who Is It For?
- ✓ Natural, wavy, curly, or frizzy hair
- ✓ Resistant, coarse, thick, or high-volume hair
- ✓ Natural or color-treated hair up to level 7
- ✓ Clients who want long-lasting, straight, smooth, and manageable hair
Working With Blonde or Compromised Hair?
For level 8+, highlighted, or heavily bleached hair, use the Bio Sleek + Nano Silky technique.
Learn the Bio Sleek + Nano Silky Technique →Suitable Hair Color Levels
Bio Sleek delivers its best results on natural or color-treated hair up to level 7.
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Best Range
Levels 1–7: use Bio Sleek for professional permanent straightening.
Levels 8–10
Use the
Bio Sleek + Nano Silky technique
for blonde or compromised hair.
Swipe to see suitable hair color levels →
Professional Salon Opportunity
More Than a Treatment.
It’s a Profitable Salon Service.
Offer a premium permanent-straightening service your clients will love—and return to maintain.
Swipe to explore the salon opportunity →
*Application count and service pricing vary by hair length, density, product usage, service time, salon location, and stylist pricing.
Simple Application Overview
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Clarify & Dry 100%
Wash twice with Nano Lamination Clarifying Shampoo. Do not use conditioner. Dry the hair completely before applying Bio Sleek.
2
Apply Bio Sleek
Apply evenly to small sections on completely dry hair, starting about ¼ inch from the scalp. Comb through and saturate evenly.
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Rinse & Blow-Dry
Rinse the treatment completely according to the hair type, then blow-dry the hair 100% before flat ironing.
4
Flat Iron
Flat iron very small sections using the correct temperature and number of passes for the client’s hair condition.
Swipe to view all application steps →
READY TO ADD BIO SLEEK TO YOUR SALON?
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Need help?
Frequently Asked Questions
Yes. Bio Sleek is designed to permanently straighten the treated hair. New hair growth will maintain the client’s natural texture and can be treated with a root retouch.
Results can last up to six months with correct professional application and proper home care.
Bio Sleek is ideal for natural, wavy, curly, thick, coarse, resistant, frizzy, or high-volume hair.
Bio Sleek is best for natural or color-treated hair through level 7. For level 8+, highlighted, bleached, or compromised hair, use the Bio Sleek + Nano Silky technique.
No. The hair must be completely dry before Bio Sleek is applied. Applying the treatment to wet or damp hair can affect the straightening result.
Yes. Bio Sleek is a 100% washable treatment. It is fully rinsed from the hair before blow-drying and flat ironing.
Yes. Bio Sleek has no waiting period after the service.