Onsen Secret Professional Nail Buffer Block | 4-Way Buffing for Natural Shine & Healthy Natural Nails - Includes 2 Extra Shine Pads, Salon-Quality, Post-Gel & Acrylic Recovery | 1 Pack
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
In Stock.
Arrives
Sunday, Dec 21
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Size: 1 Buffer with Replacement Pads
Features
- PATENTED GRIT TECHNOLOGY: Developed in 2004, our proprietary nail buffers gently buff imperfections without thinning or damaging nails, preventing cracks, splitting, and Defends against environmental stressors
- MOISTURE LOCK TECHNOLOGY: Your nails worst enemy is dryness. Our 4 sided nail buffer block locks in moisture and reveals a brilliant, chemical-free shine that lasts up to 10 days. Perfect for reversing dryness caused by acrylics, gels, and polish
- 4-IN-1 NAIL TRANSFORMATION: Smooth ridges, remove surface stains, buff for healthy circulation, and polish to a glossy, natural shine. Onsen nail buffer is ideal for both routine maintenance and rebooting nails after gel or acrylics
- SUSTAINABLE, COST-EFFECTIVE & INCLUDES EXTRA PADS: The durable buffing block is designed for years of use. Simply replace them as needed for a cost-effective, sustainable solution - no need to repurchase the entire block. Each buffer includes 2 extra white shine pads
- PERFECT FOR WEEKLY USE: Use Onsen 4 sided buffer once a week on fingernails and every two weeks on toenails. We recommend a 60-day Nail Reboot at least once a year to restore strength and vitality
Item Form: Buffer Block
Item Weight: 0.01 Ounces
Specialty: Clarifying
Number of Items: 1
Unit Count: 1 Count
Is Discontinued By Manufacturer : No
Product Dimensions : 3.5 x 0.75 x 3.5 inches; 0.01 ounces
Item model number : NB
UPC :
Manufacturer : Onsen Secret
Best Sellers Rank: #32,574 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #141 in Nail Files & Buffers
#141 in Nail Files & Buffers:
Customer Reviews: 4.5 4.5 out of 5 stars (6,137)
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Dec 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This product is awesome!! It works, and gives your nails an unbelievable hard-coat-super-shine!! Not sure the science of how this works... but it is witchcraft!!! I love it!! Works fantastic on natural nails, and acrylic nails. The shine NEVER fades or leaves, and doesn't really scratch. You don't have to re-do the filing process ever! I get my acrylic nails done professionally by my friend. I bring this bad jackson, instead of a doing a gel top coat. This is WAY better than a gel top coat. I gave an overall 5-stars, but I do have a couple of gripes... 1. It seems pretty flimsy... so I am really unsure how long the file will last. 2. It is $$PRICEY$$ for this tiny, flimsy thing!!! I mean way to expensive!!! If the file lasts and lasts... then it would be worth the price. I will just have to see how long it lasts!! UPDATE- JUNE 30 2020: I will stick with my original statement that it works, and makes your nails WAY shiny!!!! However, as you can see from my pics the shining side is completely flaking and falling apart. Keep in mind, it's flaking after literally 3 uses. Wow!!! I love how good it works, but would NOT purchase again!!! It's literally worthless now, because the shining side of the block is completely peeled off. It's way to expensive as well. No, just no!! UPDATE- JULY 2 2020: I contacted the company personally from their website (not through Amazon, since my return window had closed), and told them about how the buffing block was falling apart. I also sent in the pictures. They immediately offered me two options. 1. Get a full refund (even though the return window on Amazon had closed), and keep the original buffing block I paid for OR 2. Have a new buffing block sent to me free of charge, and still keep the original buffing block I paid for. I chose another buffing block. The customer service was awesome!! I bought this on 5/4/20 and could return it back through Amazon up until 6/3/20. Even being past the return date, they STILL helped me!! I appreciate that, and definitely will change my mind and order from them again.
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Reviewed in the United States on May 12, 2020 by S S
Nails seem smoother and shinier after buffing. Removes rough spots. Polish goes no smoother.
Reviewed in the United States on October 16, 2025 by CIA
The media could not be loaded. My nails look so healthy and beautiful. It looks like I'm wearing a shiny clear coat! And so easy in 3 steps, first use the Clarify side that evens out your nail texture, then the Boost side that smooths it out and then the Shine side that makes your nails look absolutely stunning!
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Reviewed in the United States on August 9, 2025 by Lauren Sarasua
This product does work and makes the nails shiny
Reviewed in the United States on June 18, 2025 by Amazon Customer
This nail buffer is a cut above the others! It works! Thank you for a good product!
Reviewed in the United States on November 19, 2025 by sherry
I’ve had this for more than two weeks, used it three times. I can’t believe the difference in my nails. They look fantastic. The shine last a long time and my nails feel fantastic. It comes with two additional panels for the moisturizing part of the treatment. Highly recommend., you won’t be sorry
Reviewed in the United States on September 20, 2025 by Kathy
First, note that any buffing block like this, no matter the brand, is damaging to the nails. You’re essentially filing off the nail’s top layer of keratin with a fine sandpaper, then buffing it to a shine. So it certainly shouldn’t be done often, especially if you have naturally thin or brittle nails to begin with. So use sparingly and/or only on very thick and healthy natural nails! That being said, I bought this because after keeping my nails painted with regular polish practically 24/7 for over a year, they started peeling in sheets from the tips, no matter what products, brands, and techniques I tried. I knew I wanted to take a step back from polish and allow the peeling tips to grow out, but still find a way to keep my natural nails looking shiny and smooth without polish. So, I decided to try this buffer once to give my natural nails a “fresh start.” It’s expensive for a single buffing block and I didn’t find that it really performed any better than a cheaper block from a beauty supply store. It gave me a nice smooth feeling and a shine, but nothing super glossy or glass-like. I did go easier with the sanding steps to protect my already-thin nails. The more you sand off, the more shine you’ll likely get (but the more damaging). The initial shine only lasted about 4 days for me before I felt like it was starting to dull and needed to be polished again with the smooth side of the block. Bit disappointing considering they advertise 10 days of shine. I did get 10 days out of using it for a pedicure, though, since socks act like protection. My photos show a before and after on both hands. I do like that they sell replacement pads, but so far the block has held up fine for me after doing a manicure and pedicure. Obviously don’t dig the tips of your nails into the buffer and it won’t become scratched up like some reviews show. You should just be gently gliding it over the surface of the nail, not digging the tips of your nails into it. Since I only plan to use this infrequently, I justified paying $13. But if you’re someone whose thick nails can stand up to more frequent buffing without taking on too much damage, I’d say go with a cheaper block from a beauty supply store and get the same result. Also, don’t fall for the “Japanese” marketing - as far as I can tell, Onsen is an American brand owned by an American man who visited Japan once and now names his products things like “onsen” and “pagoda" for the foreign appeal.
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Reviewed in the United States on December 6, 2023 by OJ OJ
This was a replacement for an Onsen Nail buffer I had. I was pleased with the results from using this buffer.
Reviewed in the United States on September 2, 2025 by PatJo64