Nail Hardener "Diamond Power" Sally Hansen Diamond Strength

I don't know what it strengthens, but it stays on the nails for almost a month and gives them a well-groomed appearance. As for the thin brush, there's nothing to be afraid of, you can learn to use it. I recommend it.

Once, many years ago, this product was very popular and considered effective. Nowadays, you can buy better strengtheners for less money.

I have the same complaints as the girls below: terrible smell, uncomfortable thin brush, very watery consistency (runs everywhere). It doesn't prevent peeling. It slightly speeds up nail growth, but doesn't make them stronger.

So, I can't recommend it. I was hoping for miracles.

Unfortunately, it was a waste of money. I used it for 1.5 months, but during that time, my nails did not become stronger, which means that the claimed function of the product is not fulfilled.
The product has a foul smell. The brush is thin and uncomfortable. I am disappointed with the purchase. I spent 339 UAH for nothing.
I see that it is cheaper now.

One huge downside that I haven't read about in any of the reviews is the inconvenient brush.

It is very soft and thin, making it impossible to apply the product in just 2-3 strokes. You have to go over it at least 5 times, and there's even a bristle sticking out. Using it causes physical discomfort and irritation.

I used it a couple of times, bought it as a base for nail polish. The polish stayed on well.

The nails were layered, thin, and very soft. After one and a half weeks of use, they became harder. I filed and polished my nails well, applied the product every day, and removed old layers beforehand. However, my nails still had rough surfaces and were layered from the base. Currently, my nails are growing healthy. The product seemed to bond and cover all the imperfections in the areas where they were severely layered at the tips. It works well as a base for nail polish, which applies smoothly, even if it's a finicky polish. I am very satisfied with this purchase!

I am adding to my previous review. The smell is really terrible. However, that is the only downside. Before using it, be sure to shake the bottle thoroughly, and then the consistency is good and it applies easily. And it dries amazingly fast! I used it as a base coat for a European non-cut manicure. It is transparent, but glossy. The nails look well-groomed. Verdict - I recommend it, but make sure to shake the container thoroughly beforehand and only use it in fresh air, or ask your family and pets to leave. But the smell of acetone dissipates quickly and the nails remain odorless.

This product is amazing! I decided to give my nails a break from gel polish, as I couldn't seem to grow them out. Finally, with this product, my nails are growing and they're not peeling or breaking. It works great as a base coat for regular nail polish too!

I really like it! My nails are stronger with this nail polish. I use it as a base under the polish. I'm already on my second bottle. Please bring more! I'm really looking forward to it.

I bought this product based on the reviews here, and I haven't regretted it for a second :-) It immediately strengthens my nails after application and dries quickly. I can also use it as a finishing coat. I really liked this product! Over the past few years, it's the best thing I've come across for my beloved nails. Without a doubt, it performs just as well as the Dior Diorlisse Abricot, if not better.

I really like it. To prevent nails from peeling, you need to change the file. I have glass OPI nails, and the manicure is great, but they peel with OPI. I really loved the Sally Hansen product, a balm in a disc for cuticles. It's green with white, like a spiral. I applied it on the entire nail every day for a week, then rubbed the remaining product on the cuticles. My nails grew. It's the first time in my life. They never used to grow, they always broke. My husband and I went on a tour to see the length of my nails. He even wanted to take pictures as a memory.