Death Valley Nails

GUTSY (thermal)

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$11.2 $16 In stock

Black = cold / Sheer = hot

This thermal polish changes at 88° F and has multiple shapes of black glitter and a light chrome shimmer.

Care: Thermal polish will actively transition for up to two years if kept in a dark and cool environment. Once the polish is not able to transition anymore the color will remain in either the hot or the cold state.

We suggest using a base coat and 2-3 coats of polish followed by a top coat. 10-free. Vegan. Cruelty-free. Nontoxic.

This polish comes with a removable handmade decorative bronze cap atop our standard black matte nail polish cap - merging artistry with function. To forego bronze caps on your order, click here.

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Timothy ★★★★★

The color shift at 88°F is surprisingly dramatic—it goes from a deep black to a nearly sheer finish. The different shapes of black glitter catch the light beautifully during the transition.

Henry ★★★★★

I was worried the black glitter would look chunky, but it's actually really fine and elegant against the sheer base. Watching it shift from dark to light as my fingers warm up is super satisfying.

Owen U. ★★★★★

I love how this polish shifts from black to sheer once my nails hit that 88°F mark—the mix of black glitter and light chrome shimmer looks totally different in each state. Such a fun little party trick that actually works.