Skip to content
  1. Home
  2. Blog
  3. Why Are My Toenails Yellow?

Why Are My Toenails Yellow?

Why Are My Toenails Yellow?

Quick answer

  • Nail polish stains and aging are common causes.
  • Fungal infection is another frequent cause.
  • Some health conditions cause nail changes too.

Polish and staining

Dark polish without a base coat can stain nails.

Aging

Nails often thicken and yellow with age.

Fungal infection

A common cause, often with thickening and crumbling (CDC).

Health conditions

Diabetes, psoriasis and circulation issues can change nails.

Next steps

See a doctor to identify the cause (AAD). For cosmetic care, see how to use KlaroNail.

Frequently asked questions

Are yellow toenails always fungus?

No. Polish, aging and health conditions can also cause it.

Should I see a doctor?

Yes, if nails are thick, painful or spreading.

This article is general information, not medical advice. Talk to your doctor before starting any supplement. We may earn a commission from links on this page; see our disclosure and editorial standards.

Keep reading

See all KlaroNail articles →

$49/bottle6 bottles · free US shippingCheck Price