STRAINIA Care Straight Oil

From a Japanese haircare brand built around loving your own hair — where Wabi-Sabi aesthetics meet biomimetic hair science.

STRAINIA | Japanese Haircare Engineering for Unruly Hair

• Built for くせ毛 (Kusege) — Very dry, frizzy and damaged hair, addressed at the source
• Liquid Silk + Keratin — Penetrates the hair shaft rather than coating the surface — the key distinction from ordinary hair oils
• 4 Premium Natural Oils — Rice bran, jojoba, camellia and safflower oils for deep nourishment and moisture barrier restoration
• Heat-Activated Protection — Two lactone actives bond with the hair on contact with blow-dryer or straightener heat
• Made in Japan | 60ml

Care Straight Oil — Liquid Silk & Keratin Hair Oil with Heat Protection

Most hair oils sit on the surface. The STRAINIA Care Straight Oil goes further. Developed by leading Japanese hairdressers specifically for very dry, frizzy and damaged hair, its formula is built around pure Japanese liquid silk and highly concentrated keratin — two actives whose molecular structure closely mirrors that of human hair, allowing them to penetrate the shaft rather than simply coat it.

The result is genuine structural repair: the cuticle is smoothed, hair breakage is reduced, and the hair emerges supple, shiny and noticeably more resilient. Four premium vegetable oils — rice bran, jojoba, camellia and safflower — work alongside to deliver deep moisture, restore the hair’s natural protective barrier and keep it elastic and strong against external stressors.

Two heat-active lactone ingredients complete the formula. On contact with blow-dryer or straightener heat, they bond with the hair to seal in moisture, protect the cuticle from heat damage and deliver long-lasting smoothness — while also significantly reducing blow-dry and straightening time.

Key Ingredients

• Isostearoyl Hydrolysed Silk — Pure Japanese liquid silk; penetrates the hair shaft to smooth the cuticle and reduce breakage
• Isostearoyl Hydrolysed Keratin (Wool) — Highly concentrated keratin that strengthens the hair structure from the inside out
• Rice Bran Oil (Oryza Sativa Bran Oil) — Rich in vitamins and fatty acids; deeply nourishes and adds shine
• Jojoba Oil (Simmondsia Chinensis Seed Oil) — Mimics the hair’s natural sebum; balances moisture without heaviness
• Camellia Oil (Camellia Japonica Seed Oil) — Traditional Japanese hair oil; penetrates deeply for softness and lustre
• Safflower Oil (Carthamus Tinctorius Seed Oil) — Lightweight oil that restores the hair’s natural protective barrier
• γ-Docosalactone & Meadowfoam Delta-Lactone — Heat-activated actives that bond with hair under heat to seal moisture and provide lasting smoothness

How to Use

On damp hair (recommended): After shampooing, apply to towel-dried hair. Depending on hair length, distribute 3 to 10 drops in the palms of the hands and gently work into the lengths and ends. Blow-dry or style as usual. The heat-activated formula provides additional protection and smoothing.

On dry hair: Apply a small amount to dry hair to reduce frizz and keep hair supple throughout the day.

Can be used alone or in combination with other STRAINIA Care Straight products for enhanced results.

The Philosophy Behind the Formula

STRAINIA JAPAN draws on the Japanese aesthetic of Wabi-Sabi — finding beauty in imperfection and natural form — and the principles of biomimetics, designing products that work in harmony with the hair’s own structure rather than against it. The Care Straight Oil embodies this: instead of masking frizz with a surface coating, it works from within, using ingredients that mirror the hair’s own building blocks to restore it to its most beautiful natural state.

Full Ingredients

Isododecane, Triethylhexanoin, Rice Bran Oil, Simmondsia Chinensis Seed Oil, Camellia Japonica Seed Oil, Carthamus Tinctorius Seed Oil, Isostearoyl Hydrolyzed Silk, Isostearoyl Hydrolyzed Keratin (Wool), Isostearic Acid, Isononyl Isononanoate, γ-Docosalactone, Meadowfoam Delta-Lactone, Caprylic/Capric Triglyceride, Tocopherol, Fragrance

Specifications

• Contents: 60ml
• Country of Origin: Japan