The KINUJO Sapphire Straight Pro (model: KPS24) is a straight iron in the KINUJO PRO series. Released March 2026. KINUJO’s official materials present it as a professional model developed specifically for chemical straightening. It uses proprietary “sapphire plate” technology, and hairstylists took part in development. The body is black. ALBUM ONLINE STORE is listed as an authorized KINUJO retailer. Please check the product page for the latest price and stock.
What is the KINUJO Sapphire Straight Pro
- Product name: KINUJO Sapphire Straight Pro
- Model number: KPS24
- Straight iron in the KINUJO PRO series
- Released March 2026
- KINUJO’s official materials present it as a pro model developed specifically for chemical straightening
- Uses proprietary “sapphire plate” technology
- Includes a count function, per official materials
- Body color: black
- Power: AC100V 50/60Hz, Japan only
- Includes an instruction manual (with warranty)
A pro model developed for chemical straightening
KINUJO’s official materials introduce it as a professional hair iron developed specifically for chemical straightening. The proprietary sapphire plates are described as the result of about two and a half years of development. Hairstylists took part, and official materials position it as a tool for pros born from many stylists’ voices. KINUJO PRO is also presented as salon-exclusive.
Proprietary “sapphire plate” technology
It uses KINUJO’s newly developed proprietary “sapphire plate” technology. The manufacturer presents the plates as specialized for chemical straightening. Per manufacturer testing (Niigata Industrial Research Institute, Materials Application Technology Support Center), compared with plates without sapphire plate processing, hair load resistance (tensile elongation) is described as reduced by about 50%. How finish and straightening feel will depend on the hair and service.
About the count function
KINUJO’s official materials say it includes a count function. It is described as clarifying press time with a one-second alert tone so timing and seconds can be shared during service. It is said to have been designed to help with assistant training and consistent results, and can be switched ON/OFF as needed.
A black-led design
The body color is black. Official materials describe refined beauty that blends into salon spaces and a pro-spec skeleton design attentive to light and texture. It is a candidate when you want a black beauty tool and care about how the tool looks.
Who it may suit
People interested in KINUJO’s pro series. People looking for a straight iron developed for chemical straightening. People who want black beauty appliances. People who want to weigh both design and specs. People interested in salon-minded straight irons. For home use, check official guidance and the product page.
Points to check before buying
- Japan only (AC100V 50/60Hz). Not for overseas use
- KINUJO’s official materials present it as professional and salon-exclusive
- Body weight: about 224g (body only). Body size: about 283 (W) × 29 (D) × 39 (H) mm. Plate size: about 24 (W) × 100 (H) mm
- Temperature: 18 steps (about 50–220°C, in 10°C increments). Cord length: about 3.0 m
- Includes an instruction manual (with warranty). No cover included (official FAQ)
- Not washable with water (official FAQ)
- Please check the product page for the latest price and stock
Summary
The KINUJO Sapphire Straight Pro is a black pro-oriented straight iron developed with chemical straightening in mind. It has proprietary sapphire plates and a count function, and is Japan-only. Treat finish and performance claims as manufacturer guidance, and confirm the latest price and stock on the product page.
Please check the product page for the latest price and stock.
