Formula ingredient
quaternium-91
quaternium-91 appears on this product’s ingredient list. Open its page to learn what it does and see other formulas that share it.
Products with quaternium-91
47 products in the marketplace list this ingredient.

11 in 1 Magical Leave-In Treatment
Pacifica
$14
We have created some major magic in this biotechnology-meets-nature formula. Our weightless, leave-in conditioning treatment with 11 super-charged benefits and 11 super-powered plant-based ingredients cares for dry, damaged hair delivering instant and long-term results.
Curl Travel Set
OUAI
$66
Pack your curl routine: Curl Crème, Leave In Conditioner, Bond Repair Balm and Detox Shampoo for hydration, definition and heat protection on the go.
Leave In Conditioner Melrose Place
OUAI
$32
A multi-tasking Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in velvety-rich & rosy Melrose Place scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%.
Leave In Conditioner Melrose Place - Travel
OUAI
$18
A multi-tasking travel size Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in velvety-rich & rosy Melrose Place scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%.
Leave in Conditioner North Bondi
OUAI
$32
A multi-tasking Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in fresh & energizing North Bondi scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%.
Leave in Conditioner North Bondi - Travel
OUAI
$18
A multi-tasking travel size Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in fresh & energizing North Bondi scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%.
Leave In Conditioner St Barts Scent
OUAI
$32
A multi-tasking Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in beachy & tropical St. Barts scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%. St.
Leave In Conditioner St Barts Scent - Travel
OUAI
$18
A multi-tasking travel size Leave In Conditioner that detangles, hydrates, fights frizz & protects hair from heat damage. Available in beachy & tropical St. Barts scent. Protects hair from heat damage up 450°F/232°C. When used with heat reduces hair breakage by 52%. St.
Leave In Lovers Trio
OUAI
$96
Explore North Bondi, Melrose Place and St. Barts in our Leave In Conditioner trio. Detangles, fights frizz and protects against heat up to 450°F plus free hair ties.

Daily Hydro™ Hydrating Conditioner
Act+Acre
$38
A hydrating, silicone-free conditioner powered by 5% Tilicine® and Hyaluronic Acid to repair, smooth frizz, and strengthen hair over time. Designed to lock in hydration and improve softness for healthier, shinier hair.

Daily Hydro™ Hydration System
Act+Acre
$98
A 3-step hydration routine to restore moisture, reduce frizz, and visibly repair damage while preventing future breakage. Powered by Tilicine® and Hyaluronic Acid to deeply hydrate the scalp and hair shaft, this system works to replenish moisture, smooth texture, and strengthen strands from root to tip.

frizz fighters set | anti-frizz shampoo, conditioner + treatment
amika
$52
3 steps for 3 days without frizz* what is the hydration heavyweights hydrating wash + care set? everything you need to get over a weekend’s worth of smooth hair.

hydro rush | intense moisture conditioner for dry hair
amika
$28
wash your way to 3x more hydration* + 72 hour* moisture with this silicone-free conditioner. what is hydro rush moisture conditioner? rush into a relationship with long-lasting moisture. infused with hyaluronic acid and squalane, this hydrating conditioner drenches hair with 3x more hydration*.

hydro rush | intense moisture leave-in conditioner
amika
$31
spray your way to 3x more hydration* while detangling + reducing frizz. what is hydro rush intense moisture leave-in conditioner? rush into a relationship with long-lasting moisture.

mirrorball | high shine + protect antioxidant conditioner
amika
$28
what is mirrorball high shine + protect antioxidant conditioner? get shiny hair from every angle. this antioxidant-rich conditioner boosts brilliant shine by 45%* and removes 57%* pollution buildup that would otherwise block a shiny, healthy hair look.

HYDR-8 Deep Moisture Repair Mask
Vegamour
$46
Delivers deep hydration and repairs dry, damaged hair.

HYDR-8 Intensive Repair Kit
Vegamour
$120
Smooths, repairs and protects for frizz-free hair.

The Protective Type Frizz-Smoothing Heat Protectant Styling Cream
Fenty Skin
$31
The only frizz-smoothing heat protectant styling cream you need for silk presses, blowouts + diffusing with up to 450°F of heat protection + always-on repair.

The Richer One Moisture Repair Deep Conditioner
Fenty Skin
$32
Slip into a luxurious life with Fenty Hair's extra-rich deep conditioner, an ultra-hydrating and nourishing formula to help repair dry, damaged hair.

Taming Cream 5.1oz
Harry's
$9
Designed to tame curly, coarse, and thick hair types Keeps your natural look intact Soft hold, natural finish Conditioning ingredients leave hair feeling soft, never stiff P.S. If you’re looking for something different, we recommend checking out our full line of hairstyling products

N°.3PLUS COMPLETE REPAIR TREATMENT
Olaplex
$34
Discover OLAPLEX No.3PLUS Hair Repair Treatment for all hair types. This 3-minute pre-wash rebuilds softer, stronger strands from the inside out to restore healthier, more resilient hair.

N°.3PLUS COMPLETE REPAIR TREATMENT
Olaplex
$34
A 3-minute pre-shampoo treatment to quickly repair damage before cuts and blowouts.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER FULL SIZE
Olaplex
$17
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER FULL SIZE
Olaplex
$34
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER JUMBO
Olaplex
$58
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER LITER
Olaplex
$48
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER LITER
Olaplex
$96
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER TRAVEL SIZE
Olaplex
$8
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

Nº.5 BOND MAINTENANCE™ STRENGTHENING CONDITIONER TRAVEL SIZE
Olaplex
$16
KEY BENEFITS Repairs everyday damage and defends against future breakage Strengthens and reinforces bonds for more resilient hair Replenishes hydration and enhances softness Dramatically improves detangling and manageability Clinically proven to boost shine and reduce frizz Dermatologist Tested. Vegan.

PRO EXCLUSIVE: N°.3PLUS COMPLETE REPAIR TREATMENT
Olaplex
$48
A 3-minute pre-shampoo treatment to quickly repair damage before cuts and blowouts.

PRO EXCLUSIVE: Nº.2 BOND PERFECTOR 2000ML BACKBAR
Olaplex
$140
Apply after rinsing highlights for color from hair. Suitable for over 140 applications. It can be used in a range of different ways on virgin or chemically treated hair to repair or protect your hair.

PRO EXCLUSIVE: Nº.2 BOND PERFECTOR®
Olaplex
$72
(US)

PRO EXCLUSIVE: ORIGINAL BOND BUILDING KIT
Olaplex
$198
(US)

PRO EXCLUSIVE: ORIGINAL BOND BUILDING KIT - Travel Size
Olaplex
$65
(US)

PRO EXCLUSIVE: SALON INTRO KIT
Olaplex
$198
Steps one and two of the revolutionary, three-step OLAPLEX professional system in a salon introductory kit. OLAPLEX enables you to lighten hair to levels never thought possible before, without compromising the integrity of the hair. The Salon Intro Kit is perfect for in-salon use for up to 140 applications.

PRO EXCLUSIVE: TRAVELING STYLIST KIT
Olaplex
$65
Steps one & two of the revolutionary, three-step OLAPLEX professional system in a convenient travel kit. OLAPLEX lets you lighten your client’s hair to levels never thought possible before, without compromising the integrity of the hair. Traveling Stylist Kit is perfect for on-location use for up to 30 applications.

STRENGTHEN + REPAIR VALUE SET
Olaplex
$234
KEY BENEFITS Immediately softer, stronger, more conditioned hair Repairs, strengthens, and hydrates all hair Clinically proven to rebuild broken bonds Detangles, smooths frizz, and boosts shine DETAILS Commit to dramatically stronger, healthier hair with value liters of our original Nº.4 BOND MAINTENANCE® SHAMPOO &…

STRENGTHENING SHOWER SET
Olaplex
$92
KEY BENEFITS Reverses hair damage in as little as three minutes Gently cleanses without stripping moisture Hydrates, smooths, nourishes, and detangles DETAILS The clinically proven washcare routine to repair and protect all hair types.

THE HEALTHY HAIR DISCOVERY SET
Olaplex
$18
SHORT DESCRIPTION The routine for smoother, shinier, visibly healthier hair DETAILS Healthy hair starts here. This mini healthy hair value set delivers major results for all hair types. The perfect starter set or packable routine.

THE HEALTHY HAIR DISCOVERY SET
Olaplex
$36
SHORT DESCRIPTION The routine for smoother, shinier, visibly healthier hair DETAILS Healthy hair starts here. This mini healthy hair value set delivers major results for all hair types. The perfect starter set or packable routine.

THE HEALTHY HAIR TRAVEL SET
Olaplex
$59
KEY BENEFITS Strengthens, hydrates, smooths, and detangles Extends style for clean-looking hair without residue Instantly boosts shine and provides 450ºF/232ºC heat protection DETAILS Take great hair days wherever you go with this 6-piece set of award winners and bestsellers in travel sizes and minis.

THE RICH HYDRATION ROUTINE
Olaplex
$160
KEY BENEFITS Strengthens, hydrates, smooths, and detangles Strengthens hair and prevents breakage even after 5 washes Instantly boosts shine and provides 450ºF/232ºC heat protection DETAILS Get your healthiest, strongest hair routine with a 5-piece system that dramatically reduces breakage, smooths frizz, detangles,…

THE WEIGHTLESS VOLUME ROUTINE
Olaplex
$160
KEY BENEFITS Repairs damage from the inside out Strengthens hair and prevents breakage even after 5 washes Instantly boosts shine and provides 450ºF/232ºC heat protection DETAILS Get the ultimate system for fine hair that needs strength without the added weight.

VOLUMIZE + REPAIR VALUE SET
Olaplex
$234
KEY BENEFITS Weightlessly hydrates and nourishes Detangles and smoothes hair Helps build lasting body, volume, and bounce Clinically proven to repair and prevent future damage Immediately softer, stronger, more conditioned hair DETAILS Commit to stronger, full-volume fine hair with value liters of our…

Apple Cider Vinegar Revitalizing Conditioner
Dphue
$32
The ACV Revitalizing Conditioner features apple cider vinegar to help keep the scalp balanced, reduce shedding and support healthy hair growth. It gently exfoliates as it unclogs the hair follicles, activating them to help promote a more robust growth cycle.

Clean Slate Daily Conditioner
Nymbrands
$10.99
Not Your Mother’s Curl Talk® Clean Slate Daily Conditioner is Step #2 of your curl reset. This silicone-free, paraben-free formula helps detangle, define, and hydrate your hair with a soft, lightweight finish. The result? Soft, silky, bouncy curls that are up for anything.

Flaxseed Damage Repair Hair Mask with 5% Flaxseed, 1% Hyaluronic Acid, Ceramides for Softness & Shine - 300 ml (Pack of
Mamaearth
$1198
Not all masks are about hiding. Some are about fixing. Fixing hair damages that go deeper than they look. Daily environmental stressors weaken the hair fibre, reducing its strength and moisture. And you’re left with rough and dry hair. So, what’s the fix? Mamaearth Flaxseed Damage Repair Hair Mask.