Hinokitiol

What is Hinokitiol?

Hinokitiol, also known as β-thujaplicin, is a naturally occurring monoterpenoid compound belonging to the tropolone family. It is primarily extracted from the essential oils of wood from trees in the Cupressaceae family, such as Chamaecyparis obtusa (Hinoki cypress) and Thujopsis dolabrata. In cosmetics, it appears mainly in hair care formulations like shampoos, conditioners, and styling products. Functionally, it imparts a subtle woody scent as a fragrance ingredient, helping to define the product's sensory profile while adhering to regulatory scent guidelines. As a hair conditioning agent, it enhances hair texture by reducing friction and improving smoothness. Its antistatic properties work by boosting surface conductivity, minimizing static buildup and flyaways for better manageability. Additionally, its metal-chelating ability contributes to product stability by binding trace metals.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-2 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Provides a natural woody fragrance to enhance product sensory appeal.

Improves hair softness, shine, and ease of styling by reducing friction.

Reduces static electricity in hair, promoting smoothness and manageability.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or frizzy hair seeking better conditioning.
Those with known allergies to wood-derived essential oils.
People experiencing static-prone hair in dry environments.
People sensitive to fragrance ingredients in cosmetics.
Users preferring products with natural-derived fragrance notes.
Individuals prone to contact dermatitis from tropolone compounds.

Safety Notes

  • Rated low hazard by EWG (1-2 score), indicating minimal safety concerns.
  • Non-comedogenic (rating 0), unlikely to clog pores.

Frequently Asked Questions about Hinokitiol

What is hinokitiol derived from?

It comes from essential oils in the wood of cypress trees like Hinoki.

Is hinokitiol safe for daily hair use?

Yes, it has a low EWG hazard rating and supports hair conditioning safely.

Does hinokitiol help with hair static?

Yes, it acts as an antistatic agent to reduce flyaways and improve smoothness.