R+Co BLEU F-Layer Deep Conditioning Serum 4.2 oz — Lightweight Leave-In for Hydration & Smoothness

R+Co BLEU F-Layer Deep Conditioning Serum is a lightweight leave-in treatment that restores the hair's lipid layer to hydrate, detangle, and add smoothness and shine.

This serum is designed to be applied to damp hair to rebuild the protective surface around strands, improve manageability, and prime hair for styling. Lightweight oils, plant extracts, a peptide complex, and pea protein work together to improve softness and elasticity without weighing hair down. The formula is vegan, paraben-free, and finished with the BLEU "Bleu Waves" fragrance for a refined citrus-floral scent. A little product covers a lot, so the 4.2 oz bottle provides lasting use.

How does this serum repair and protect hair?

The R+Co formula targets the hair's outer lipid layer—helping to reseal and smooth cuticles so hair retains moisture better. Conditioning ingredients and peptides support strand strength and reduce the feel of dryness and roughness. Protection comes from replenishing oils and proteins that help hair resist breakage during styling and detangling.

• Contains avocado, sunflower, and coconut oils to replenish lipids and soften hair
• Pea protein and peptide complex help improve elasticity and resilience
• Lightweight texture avoids buildup while smoothing cuticles

Can this serum make detangling easier for wet hair?

Yes — it’s formulated to slip through wet strands so combs and brushes move with less resistance, cutting down on breakage. Apply mainly to mid-lengths and ends where tangles form most often. It also leaves hair feeling smoother, which helps subsequent styling tools glide more easily.

• Use on damp hair after washing to reduce knots and pulling
• Concentrated formula means small amounts improve manageability
• Improves comb-through for wet-styling and blow-drying

Will this serum add shine and control frizz without heavy buildup?

The product is crafted to deliver noticeable shine and tame frizz while remaining lightweight. The combination of natural oils and conditioning agents smoothes the hair surface so light reflects evenly, producing a healthy-looking gloss. Because it’s a leave-in and formulated not to be greasy, it provides finishing benefits without weighing hair down.

• Restores natural-looking sheen through surface smoothing
• Controls flyaways and frizz with a non-oily finish
• Designed for daily or pre-styling use without heaviness

How should I use this serum for best results?

Apply a small amount to towel-dried hair, concentrating on the mid-lengths and ends where damage and dryness are most common. Distribute evenly with fingers or a comb, then blow-dry or air-dry and style as usual. For thicker or very dry hair, use slightly more; for fine hair, use a minimal amount to avoid weighing roots down.

• Apply to damp hair after shampooing and conditioning
• Focus on mid-lengths and ends, avoid roots for finer hair
• Layer under styling products or use alone for a lightweight finish

Who is this for: R+Co BLEU F-Layer Deep Conditioning Serum suits anyone looking for a lightweight leave-in that improves softness, adds shine, and eases detangling—especially those with dry, chemically treated, or style-prone hair. It's a solid option for people who want clean-beauty credentials (vegan, paraben-free) and a subtle citrus-floral scent, without heavy oils or residue. Ideal for daily pre-styling use or when hair needs extra slip and surface repair between washes.

Ingredients

Water (Aqua/Eau), Cetearyl Alcohol, Cetyl Alcohol, Cetrimonium Chloride, Phenoxyethanol, Fragrance (Parfum), Behentrimonium Chloride, Steapyrium Chloride, Panthenol, Helianthus Annuus (Sunflower) Seed Oil, Potassium Sorbate, Cocos Nucifera (Coconut) Liquid Endosperm, Amaranthus Caudatus Seed Extract, Citric Acid, Diisostearyl Malate, Ethyl Linoleate, Ethyl Oleate, Glycerin, Crambe Abyssinica Seed Oil, Persea Gratissima (Avocado) Oil, Butylene Glycol, Hydrolyzed Pea Protein, Cocos Nucifera (Coconut) Fruit Juice, Sodium PCA, Helianthus Annuus (Sunflower) Seed Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Sodium Lactate, Sodium Hyaluronate, Arginine, Cyclodextrin, Aspartic Acid, Sodium Benzoate, PCA, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Glycine, Alanine, Serine, Benzyl Alcohol, Caprylyl/Capryl Glucoside, Valine, Caprylic Acid, Guar Hydroxypropyltrimonium Chloride, Xylitol, Isoleucine, Proline, Threonine, Tocopherol, Histidine, Phenylalanine, Limonene, Benzyl Salicylate, Linalool, Citral