What Is Perimenopause, and Why Does It Affect Your Hair?

Perimenopause is the hormonal transition phase that precedes menopause, typically beginning in a woman's 40s and lasting anywhere from a few years to a decade. During this phase, estrogen and progesterone levels fluctuate unpredictably — and those fluctuations trigger significant changes in scalp and hair health.

Hair health is directly tied to hormonal health. Estrogen plays a critical role in keeping hair in the anagen (growth) phase longer. As estrogen levels destabilize, the hair cycle shortens — follicles spend more time resting than growing. Declining estrogen also reduces activity of the sebaceous glands on the scalp, leading to less natural oil production, drier strands, and a compromised scalp barrier.

80%
of women experience some form of hair thinning by age 60
8%
of women experiencing symptoms are actually diagnosed with perimenopause
40s
the typical decade when perimenopause-related hair changes begin

The Real Culprit: Inflammation at the Scalp

When hormonal equilibrium is disrupted, the scalp becomes a site of elevated inflammatory activity. This inflammation damages hair follicles, impedes blood circulation to the root, and shortens the growth cycle. The visible consequences are unmistakable:

  • Increased daily shedding and diffuse thinning
  • Hair that feels drier, more brittle, and breaks easily
  • Changes in texture — coarser, frizzier, or wiry new growth
  • Scalp sensitivity, itchiness, or irritation
  • Loss of shine and natural lustre
  • Thinning most noticeable at the crown and part line

"Due to the decline in both estrogen and testosterone levels in the perimenopause and menopause stages, it is common for scalp hair texture to become drier. As estrogen levels drop, hair follicles can constrict or shrink — some women may experience hair loss or thinning, and the hair shaft can become more fragile."

The most effective approach, beyond addressing hormones with a healthcare provider, is to introduce topical, clinically-relevant anti-inflammatory support directly to the scalp. This is where Tamanu Oil changes the game.

The Cornerstone Ingredient: Tamanu Oil

Every TO112 product is formulated around a single cornerstone ingredient: Tamanu Oil (Calophyllum inophyllum seed oil). Cold-pressed from the nut of the tamanu tree — native to Southeast Asia and Polynesia — this nutrient-dense botanical has been used for centuries by Tahitian and Polynesian women as a heal-all for hair, skin, and scalp. Its name literally translates to "a cure-all."

Rich in omega-6 and omega-9 fatty acids, Tamanu Oil nourishes follicles at the cellular level while restoring the scalp's own sebum production — precisely what estrogen decline disrupts. Its anti-inflammatory compounds soothe the scalp environment that perimenopause inflames. Its antioxidant profile combats oxidative stress at the follicle level. It penetrates the hair cortex to restore moisture from the inside out.

Anti-inflammatory Antimicrobial Antioxidant Follicle nourishing Natural UV protection Hair growth support Lightweight carrier oil Scalp barrier repair

TO112 founder Luis Pacheco, a world-renowned master colourist and hair expert, combined Tamanu Oil with ethically sourced partner ingredients — amino acids, argan oil, biotin, collagen, keratin, camellia extracts — to create a collection where every product works together as a complete scalp and hair system.