iHerb (Headquarters: California, USA, CEO: Iman Zabihi), herein referred to as iHerb, announced a report summarizing the self-care trends of women in their 30s and 40s, based on search keyword data from February to March 2026. April, when the environment changes significantly, is a time when more women feel accumulated fatigue and fluctuations in their skin and physical condition. iHerb's search data reveals a prominent trend: instead of merely searching for 'general discomfort,' women are specifically searching for ingredient names like 'magnesium' and 'astaxanthin.' This trend shows an expansion of 'ingredient-specific' self-care, where individuals choose ingredients that suit their own lifestyle. *The image is an illustration created using generative AI.

Top 5 Noteworthy Ingredients to Overcome 'Spring Ailments'

An analysis of the vast search data held by iHerb for February to March 2026 revealed the 'Ingredient Keyword Ranking' that attracted particular attention this spring. The lineup reflects the real concerns of the new lifestyle season.

Data Reveals 'Correct Ingredients for Each Concern' for Women in their 30s and 40s

The top-ranking ingredients are deeply connected to the concerns and lifestyles often experienced by women in their 30s and 40s. This generation, constantly juggling work and family, seeks to 'efficiently maintain themselves.' iHerb's search data highlights ingredient selection patterns unique to this demographic.

① [For Spring Stress and Accumulated Fatigue] Magnesium

When lifestyle rhythms change with a new season, the quality of rest tends to decline. Magnesium is singled out during such times. It is an essential mineral involved in over 300 enzymatic reactions in the body and is chosen for internal conditioning rather than temporary refreshment.

② [For UV Damage and Transparency Care] Astaxanthin × Glutathione

Sunscreen protects externally as a given. Beyond that, more people are incorporating 'drinking antioxidants' before the peak summer season. Astaxanthin, which targets oxidative stress caused by UV rays, and glutathione, which supports a brighter appearance from within, are a classic combination for women in their 30s and 40s.

③ [For 'Dullness' from Busyness and Early Aging] Liposomal Vitamin C × Zinc

This generation, with limited time for care, prioritizes 'absorption efficiency' of ingredients. 'Liposomal' forms, which stay in the body longer than regular vitamin C, are often chosen. Combined with zinc, a source of vitality, this approach to efficient self-care is gaining popularity.

④ [For Spring Fluctuations and Decreased Vitality] NMN

Spring, with its seasonal changes and new lifestyle impacts, can easily cause fluctuations in physical condition. NMN is attracting attention for addressing the vague fatigue and decreased vitality that become more noticeable with age. Known as a precursor to NAD+, which is involved in energy metabolism in the body, it is embraced as a means to maintain a healthy state from within, rather than just a temporary fix.

iHerb's Recommended Products by Concern

[Sleep・Fatigue] Switching to Deep Rest

Doctor's Best High Absorption Magnesium Glycinate Lysinate Chelate Albion® TRAACS® 240 capsules (100mg per capsule)

Magnesium ranks first in searches. It utilizes 'chelated magnesium,' which considers absorption rate, designed to efficiently replenish minerals often lacking in modern people. Perfect for those who want to calm the excitement at the end of the day and regulate their rest rhythm.

Regular price: 3,348 yen *As of May 1, 2026

https://iherb.co/jBBGARsy

[Powerful Antioxidant] Building a Foundation to 'Not Burn from Within' Before Long Holidays

California Gold Nutrition Astaxanthin Astalif® Pure Icelandic 12mg Vegetarian Softgels 30 capsules

Ranking second in searches, this is the hottest ingredient right now. It contains a high concentration of 12mg of Astaxanthin, known for its world-class antioxidant power. By taking it from early spring, when UV radiation begins to increase, it can internally supplement what external care alone cannot cover.

Regular price: 2,020 yen *As of May 1, 2026

https://iherb.co/89NofLUZ

[Transparency・Barrier] Intensive Care to Repel UV Rays and New Lifestyle Stress

NOW Foods Liposomal Vitamin C 120 vegetarian capsules (500mg per capsule)

Utilizes 'Liposomal PureWay-C™,' which boasts superior retention in the body. This capsule type provides 1,000mg equivalent of vitamin C with two capsules, combating UV rays and new lifestyle stress.

FACT BOX

  • Source: PR TIMES
  • Category: Survey
  • Products / services: NMN