Life changing (at least for my nails LOL). I never leave reviews but this is too good not to share. Disclaimer: I'm a nail nut. A few years ago, at the age of 53, I decided I was very tired of brittle, flaky, dry, weak nails. I have always taken care of my nails, so the changes I was seeing were age related. I was eating healthy and exercising, was using nail polish but never gel, I moisturized etc. Nothing was helping. I used a special nail oil 6-8 times a day and no acetone and no nail polish for A YEAR and saw very little improvement. Then I discovered Dr Dana's Deep Hydrading Formula and saw an immediate improvement using their Deep Hydrating Formula...again I applied it on average 6 times a day so definitely was committed. My nails stayed short but stopped splitting and chipping...that was after about a month of use. They also have a hyaluronic serum but recommend using once a week. Then I discovered this product and went nuts with it. I bought three applicators, kept one by my desk, one in my bathroom and one in my car. I probably apply it 12 times a day LOL...certainly after any time I was my hands. It's easy. I apply a top 'coat' of the Dr Dana Formula after using the SI-NAILS. This is the magical combo. My nails are strong, flexible, and growing. This is the best they've looked in 20 years. So if you are unhinged like me and willing to go the distance, the combo of these two products changed my nails, they look 30 years younger ;)
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This item: ISDIN Si-Nails - Fast Absorbing Nail Strengthening and Hardening Serum for Nail Durability in Thin Nails, made with Cationic Hyaluronic Acid 0.08 FL OZ
$39.00 ($39.00/Count)
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$78.00 ($22.94/Fl Oz)
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$115.00 ($115.00/Fl Oz)
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Sustainability features
This product has sustainability features recognized by trusted certifications.Reduced air and/or water in the product or packaging for more efficient transportation.As certified by
Compact by Design (Amazon-developed Certification)
Compact by Design identifies products that, while they may not always look very different, have a more efficient design. By reducing water and/or air in the product or packaging, these become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions.Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and offset.As certified by
ClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification NumberGJLJPQSustainability features
This product has sustainability features recognized by trusted certifications.The leather in this product was produced by a Leather Working Group (LWG) certified tannery, supporting more-responsible leather production. LWG brand members may make on-product claims if they have submitted a sourcing declaration and 100% of the leather is produced by a LWG certified tannery.As certified by
Leather Working Group
Leather Working Group (LWG) is a not-for-profit community organization dedicated to driving excellence in the production of more-sustainable leather. LWG aims to have a positive impact on the environment through driving resource efficiency in leather production, reduced waste generation and emissions, better chemical management and increased traceability. LWG brand members may make claims on meeting a number of criteria, including submitting a sourcing declaration stating the percentage of leather purchased from LWG certified facilities. A claim can only be made when a product contains leather as the prominent material and 100% of the leather was produced by a LWG-certified tannery.Sustainability features
This product has sustainability features recognized by trusted certifications.Product contains at least 95% organic material.As certified by
USDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly.Sustainability features
This product has sustainability features recognized by trusted certifications.Product contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly.Sustainability features
This product has sustainability features recognized by trusted certifications.Product contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly.
Product Description
HOW TO USE
1. Activate
The first time you use ISDIN Si-Nails, activate the brush by pressing down on the applicator until the brush is moistened (approximately 25 times).
2. Apply
Apply product to the entire nail and cuticle, covering the nail edges. Use on dry, bare nails for best results.
3. Extend
Apply in vertical strokes across the entire surface of the nail and underneath the nail.
4. Repeat
Repeat steps 1-2 for each nail. Use only on the nail, and wipe off any excess product from the skin.
Build Your Body and Nail care Routine
 Si Nails |  Uradin Body Lotion10 |  Uradin Podos |  Germisdin Original | |
|---|---|---|---|---|
|
Customer Reviews
|
2,146
|
1,845
|
831
|
2,512
|
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Price
| $39.00 | $42.00 | $39.00 | — |
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Product Type
| Nail Strengthener | Body Lotion | Hydrating Foot Gel | — |
|
Skin Concern
| Brittle nails | Dry skin | Cracked skin | — |
|
Benefits
| Stronger nails | Immediate hydration | Repairs de skin | — |
|
Suitable for Sensitive Skin
| ✔ | ✔ | ✔ | ✔ |
|
Key Ingredient
| Cationic Hyaluronic Acid | Urea 10% | Urea 10% | — |
|
Skin type
| — | All skin types | All skin types | — |
Really truly works
Life changing (at least for my nails LOL). I never leave reviews but this is too good not to share. Disclaimer: I'm a nail nut. A few years ago, at the age of 53, I decided I was very tired of brittle, flaky, dry, weak nails. I have always taken care of my nails, so the changes I was seeing were age related. I was eating healthy and exercising, was using nail polish but never gel, I moisturized etc. Nothing was helping. I used a special nail oil 6-8 times a day and no acetone and no nail polish for A YEAR and saw very little improvement. Then I discovered Dr Dana's Deep Hydrading Formula and saw an immediate improvement using their Deep Hydrating Formula...again I applied it on average 6 times a day so definitely was committed. My nails stayed short but stopped splitting and chipping...that was after about a month of use. They also have a hyaluronic serum but recommend using once a week. Then I discovered this product and went nuts with it. I bought three applicators, kept one by my desk, one in my bathroom and one in my car. I probably apply it 12 times a day LOL...certainly after any time I was my hands. It's easy. I apply a top 'coat' of the Dr Dana Formula after using the SI-NAILS. This is the magical combo. My nails are strong, flexible, and growing. This is the best they've looked in 20 years. So if you are unhinged like me and willing to go the distance, the combo of these two products changed my nails, they look 30 years younger ;)
Top reviews from the United States
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- Reviewed in the United States on April 11, 2025
Life changing (at least for my nails LOL). I never leave reviews but this is too good not to share. Disclaimer: I'm a nail nut. A few years ago, at the age of 53, I decided I was very tired of brittle, flaky, dry, weak nails. I have always taken care of my nails, so the changes I was seeing were age related. I was eating healthy and exercising, was using nail polish but never gel, I moisturized etc. Nothing was helping. I used a special nail oil 6-8 times a day and no acetone and no nail polish for A YEAR and saw very little improvement. Then I discovered Dr Dana's Deep Hydrading Formula and saw an immediate improvement using their Deep Hydrating Formula...again I applied it on average 6 times a day so definitely was committed. My nails stayed short but stopped splitting and chipping...that was after about a month of use. They also have a hyaluronic serum but recommend using once a week. Then I discovered this product and went nuts with it. I bought three applicators, kept one by my desk, one in my bathroom and one in my car. I probably apply it 12 times a day LOL...certainly after any time I was my hands. It's easy. I apply a top 'coat' of the Dr Dana Formula after using the SI-NAILS. This is the magical combo. My nails are strong, flexible, and growing. This is the best they've looked in 20 years. So if you are unhinged like me and willing to go the distance, the combo of these two products changed my nails, they look 30 years younger ;)
Images in this review
- Reviewed in the United States on April 7, 2025
It works. Before & after 4x months (pics). I use it every other night now. Just one swipe on each nail before bed. I’m on my second tube, it doesn’t last long initially but you can taper off how often you use it making it more cost effective. Still- I’ve never had nails this beautiful in my life. Worth every dollar.
It works. Never had natural nails this beautiful before!
Reviewed in the United States on April 7, 2025
Images in this review
- Reviewed in the United States on March 13, 2025
I’ve never had strong nails; they’ve always been so thin that they’d rip easily. I’ve tried products in the past that helped my nails grow, but they would break because they were slightly thicker but not strong enough. This product is amazing! After using it for almost two months, my nails are not only growing out but also stronger, so I’m no longer worried about them breaking. I’ve also been using the Hard as Hoof nail cream to help with thickness, though I’ve only been using it for about a week or so.
Images in this review
- Reviewed in the United States on March 1, 2025
