Survey Highlights

Skin irritation increases during seasonal transitions primarily due to rapid shifts in temperature and humidity, combined with changes in clothing materials. When switching to summer attire, continuing moisturizing routines and strengthening UV protection are essential. While bumps on the upper arms or thighs (keratosis pilaris) can be improved through moisturizing and exfoliation, chemical peeling or laser treatment are effective options for severe cases.

- Skin issues experienced during seasonal change: 63.2% (with 'itching and redness' being the most common at 42.8%) - People concerned about 'dark spots, pores, and fine hair' in areas exposed by summer clothing: 78.5% - 68.3% of those struggling with bumps on their upper arms (keratosis pilaris) reported not knowing the appropriate care methods.

Terminology

Keratosis Pilaris (Moko-sei-taisen) A skin condition where pores become clogged with keratin, causing small bumps. Often found on upper arms, thighs, and back, it is a benign condition with strong genetic factors.

Chemical Peeling A treatment that involves applying acidic agents to the skin to remove old keratin. Effective for improving keratosis pilaris, hyperpigmentation, and acne scars.

Hyperkeratosis (Kakushitsu-hiko) A state where the stratum corneum thickens due to disrupted skin turnover, causing roughness and clogged pores.

Comparison of Treatment Methods

General estimates (varies by individual): - Self-care (Moisturizing/Exfoliation): Effect felt in 1-3 months, 1,000–3,000 JPY/month - Chemical Peeling: Effect felt in 2-4 weeks, 5,000–15,000 JPY per session - Laser Treatment: Effect felt in 1-2 weeks, 10,000–30,000 JPY per session

Survey Overview

- Target: 300 adults aged 20-50 across Japan with habits of seasonal clothing changes - Period: May 11, 2026 – May 20, 2026 - Method: Internet-based survey

FACT BOX

  • Source: PR TIMES
  • Category: Survey