Is the ISO Beauty Spectrum Pro good for thick hair?

Yes. The 450°F top setting and 1 1/2 or 1 3/4 inch plates handle thick or long hair well. Fine hair should stay near the lower 140-300°F range.

What sizes does it come in?

It comes in 1 1/4 inch, 1 1/2 inch and 1 3/4 inch plates. The 1 1/4 inch is best for curls and short hair; the wider plates suit long, thick hair.

Yes. It is dual voltage at 110-240V, 50/60Hz, so it works with a plug adapter in most countries. A voltage converter is not needed.

You get the straightener plus safety instructions and a warranty card. No heat mat or pouch is listed.

At $44.00 at ModeSens as of November 6, 2026, it sits well below typical ceramic flat iron prices. Four stores list it new, so compare before buying.

No. Use it on dry hair only. The plates are hot enough to damage wet strands.

Rated 4.4 out of 5 from 25 ratings.

6 stores we checked sell it, including ModeSens, ShopSimon, eBay, Walmart, GoSupps Beauty.

At ModeSens, for $44.00, 20% under what the other stores charge, as of our latest check.

$44.00at ModeSensObserved at 12:23 AM

20% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when.