“not including multiple sizes in the plus is a missed opportunity to me.”

70% of 345 verified owners recommend the Revlon One-Step Volumizer, based on real owner verdicts aggregated from Reddit, enthusiast forums, and YouTube.
Synthesized from what Revlon One-Step Volumizer owners say — not a spec sheet.
The original, the 2.8 inch barrel model Revlon now sells as the Salon One-Step Hair Dryer and Volumizer. Revlon lists it at 1,100 watts with three heat and speed settings, an oval brush of nylon pins and tufted bristles, a ceramic coating and a brush head that does not detach. The One-Step Volumizer PLUS is the other model, with a 2.4 inch detachable head and a fourth, medium heat setting.
Both at once. It is a hot air brush, so it dries damp hair and shapes it in the same pass, and Revlon notes it can be held closer to the scalp than a conventional dryer to lift the roots. Owners with a bob or with hair that wants to sit flat may still run straighteners over it afterwards.
Both turn up in owner reports: plastic bristles bending or snapping off, and units failing after about a year of regular use. Revlon lists a four year limited warranty on this model, and the brush head is non-detachable, so the brush and the dryer are a single unit rather than separate parts.
A few owners say it did, reporting breakage and flyaways after regular use, and one describes crisp ends. Revlon gives this model three heat and speed settings, cool, low and high, so there is a no-heat option for finishing. The complaint is a real minority thread rather than the common experience, with 70% of owner verdicts recommending the tool.
Not for everyone. The owners who report getting no volume at all, or needing straighteners to finish the job, tend to be the ones with fine or mid-length hair, and a couple say it does nothing for their hair whatsoever. Most owners do get the blow-dry finish they were after, at 70% recommend.
No. Revlon states the One-Step unit is built for 120 volt US outlets only and warns that a voltage converter will damage it, directing buyers abroad to the version sold locally with the correct voltage and plug. The US plug also carries an ETL test button, which hair dryers sold in the States are required to have.
Retailers' own star averages, for comparison — separate from our vetted owner-verdict score above.
“not including multiple sizes in the plus is a missed opportunity to me.”
“Thanks Brad, I am officially sold!”
“Love my Hot Tools, would never switch.”
“the old one I have RUINED my hair it was soooo hot that my hair was breaking/ getting over heated!”
“I still can see waves in your plus side, while the original side looks fancier and more luxurious”
“It’s the best I’ve found yet.”
“It overheats super easily and I know a lot of people have had serious heat damage from it”
“I love it”
“the original side of your hair looks better. That is just my personal opinion.”
“The original side looks smoother and shinier imo.”
“I've had mine for over a year and at the risk of sounding dramatic it changed my life.”
“Most were flattened down and stopped gripping my hair as well.”
“This thing works my hair like magic. I will never use a hair straightener again”
“I don't think I would ever buy a hair dryer that I can only use every 2 months”
“the big original was so hard to get my front bangs or the roots, so i'm excited for this smaller one”
“It has made styling my hair much quicker and less work yet looks better!”
“I invested in a rev air because it doesn’t feel as hot as the revlon.”
“The original side looks professional. The new Plus looks choppy with less shine.”
“without heat protectant your hair can be so fried”
“It broke on the locking mechanism that keeps the brush on around year 3.”
“I have this and it works wonders, gives almost a natural straight”
“But I find the original is better than the new and improved version.”
“This thing pulled my hair out.”
“Glad that I did”