Olaplex Nº.5 Leave-In Conditioner 100 mL — Lightweight Repair, Heat Protects to 450°F, Frizz Control

Olaplex Nº.5 Leave-In Conditioner is a lightweight gel-cream that instantly hydrates, seals split ends and helps protect hair from heat up to 450°F/232°C while improving manageability.

Designed to layer into a reparative hair routine, Nº.5 delivers concentrated moisture without heaviness. Its velvety texture smooths cuticles, reduces frizz and supports styling from damp or dry hair. The formula works across hair types—coily, curly, wavy and straight—making it a versatile pick for hair that needs extra moisture, detangling help and protection during heat styling.

How does Nº.5 improve wet-to-dry styling and reduce frizz?

Nº.5 smooths the hair surface and controls humidity-driven frizz for extended periods. Applied to damp hair, it helps create softer, more defined air-dried looks; used before blow-drying, it promotes sleeker, more manageable results.

• Velvety gel-cream that smooths cuticles for a sleeker finish.
• Humidity-resistant formula that helps control frizz for up to 72 hours.
• Lightweight feel avoids weighing down fine or limp hair.

What protection and reparative benefits does this leave-in provide?

Nº.5 is formulated to work from cortex to cuticle to continuously address weakened areas and visibly seal split ends. It also offers thermal protection for heat styling up to 450°F/232°C, helping reduce breakage caused by hot tools when used as part of a styling routine.

• Seals and helps mend split ends while hydrating mid-lengths and ends.
• Protects hair from heat exposure up to 450°F/232°C when styling.
• Clinically supported improvements in detangling and styling breakage reduction.

How should I use Olaplex Nº.5 for best results?

Apply a small amount to clean, towel-dried hair, focusing on mid-lengths to ends; the concentrated formula means a little goes a long way. You can leave it in for air-dried styles or blow-dry and style—reapply sparingly to dry hair for added smoothness or to tame flyaways.

• Use after cleansing and conditioning—start with a pea-to-dime sized amount.
• Distribute evenly through damp hair, concentrating on damaged areas.
• Can be left in for air-drying or used before heat styling for protection.

Will this work on different hair types and textures?

Nº.5 is formulated to suit a broad range of hair textures from fine straight to dense coils. Its lightweight, non-greasy feel adapts to varying porosity and thickness—helping with definition on curls and adding softness to straight styles without buildup.

• Suitable for coily, curly, wavy and straight hair types.
• Non-heavy formula that won’t overload fine strands when used sparingly.
• Helps detangle and smooth thicker, drier hair for easier styling.

Who is this for: Olaplex Nº.5 is ideal for anyone wanting targeted hydration, split-end sealing and heat protection in a single, easy-to-use leave-in. It’s particularly helpful for hair that feels dry, frizzy or prone to breakage during styling, and for those seeking a lightweight cream that improves manageability across all hair textures.

Ingredients

INGREDIENTS / INGRÉDIENTS: Water/Aqua/Eau, Cetearyl Alcohol, Astrocaryum Murumuru Seed Butter, Propanediol, Behentrimonium Chloride, Glycerin, Cetyl Alcohol, Isoamyl Laurate, Squalane, Bis-Aminopropyl Diglycol Dimaleate, Brassicyl Valinate Esylate, Cetyl Esters, Pentylene Glycol, Phenethyl Benzoate, Brassica Campestris/Aleurites Fordi Oil Copolymer, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Caprylic/Capric Triglyceride, Cetrimonium Chloride, Caesalpinia Spinosa Gum, Fructooligosaccharides, Beta Vulgaris (Beet) Root Extract, Sodium PCA, Hydroxypropyl Starch Phosphate, Guar Hydroxypropyltrimonium Chloride, Sodium Lactate, Hydrogenated Ethylhexyl Olivate, Calcium Gluconate, Argania Spinosa Kernel Oil, Caprylyl Glycol, Cocos Nucifera (Coconut) Oil, Panthenol, Arginine, Ethylhexylglycerin, Oryza Sativa (Rice) Bran Extract, Sodium Phytate, Aspartic Acid, Potassium Lactate, Ximenia Americana Seed Oil, PCA, Hydrogenated Olive Oil Unsaponifiables, Butylene Glycol, Lactic Acid, Raphanus Sativus (Radish) Seed Extract, Octyldodecyl Oleate, Octyldodecanol, Helianthus Annuus (Sunflower) Extract, Propylene Glycol, Glycine, Citric Acid, Alanine, Algin, Coco-Glucoside, Sorbitan Oleate, Serine, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract, Valine, Carrageenan, Chitosan, Xanthan Gum, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Magnolia Officinalis Bark Extract, Betula Alba Bark Extract, Crambe Maritima Extract, Ulmus Fulva Bark Extract, Caesalpinia Spinosa Fruit Extract, Sodium Hyaluronate, Hydrolyzed Ceratonia Siliqua Seed Extract, Zea Mays (Corn) Starch, Helianthus Annuus (Sunflower) Sprout Extract, Polyquaternium-7, Sodium Hydroxide, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate, Fragrance (Parfum), Hexyl Cinnamal, Limonene, Citral, Linalool, Citronellol