Common questions

Is UNIQLO Leggings healthy?

UNIQLO Leggings scores 42/100 on Scout's independent analysis of ingredients, additives, and lab results — a below-average score in Scout's analysis. A problematic mix of reclaimed cotton, acrylic polymers, rayon, and spandex — 4 health risks flagged.

How does UNIQLO Leggings compare to other leggings?

UNIQLO Leggings ranks #20 of 32 leggings in Scout's independent rankings. The current top score in the category is Layere Organic Cotton Capri Leggings at 95/100.

Which ingredients drive UNIQLO Leggings's score?

In Scout's ingredient-by-ingredient analysis, Acrylic Polymers (20%), Rayon (7%), Spandex (5%) are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

UNIQLO Leggings

Poor

At a glance

Beneficial ingredients 0

Harmful ingredients 3

Category Leggings

Summary

A problematic mix of reclaimed cotton, acrylic polymers, rayon, and spandex — 4 health risks flagged. Acrylic is a plastic fiber, and rayon involves heavy chemical processing. Confirmed plastic leaching.

Key ingredients 4

Acrylic Polymers (20%)

Bad

Fully synthetic plastic fiber derived from acrylate monomers. Heavy microplastic shedder and one of the least environmentally friendly textile fibers.

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Rayon (7%)

Bad

Semi-synthetic cellulose fiber produced using sodium hydroxide and carbon disulfide — a chemically intensive process that can leave residues and cause environmental harm.

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Spandex (5%)

Bad

Synthetic polyurethane stretch fiber adding further plastic leaching risk.

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Reclaimed Cotton (53%)

Neutral

Recycled cotton base — a positive sustainability attribute, but offset by the other synthetic fibers.

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