H CND is a safe choice in terms of chemical ingredients, perhaps even the safest. What I recommend is the base coat and the colors, not the top coat. It has completely won me over, especially if you change colors every week.
Positives:
_Removing it is extremely easy! It hardly damages the natural nail, which is rare in other brands (if, of course, you follow the application instructions provided by the brand).
_The natural nail can breathe with this semi-permanent polish, it is very lightweight, and I have never experienced any discomfort.
_During the curing process, there is no burning sensation like with other brands, such as Lalloo.
_It does what it promises, meaning it applies like a regular polish and can be removed in just a few minutes.
_It has the right consistency, not too runny or too thick, so it stays where you apply it.
_The color is exceptional with full coverage.
_It does not bubble.
_It has no odor at all.
Negatives:
_The brush is mediocre, especially considering the price of 30 euros. I would consider it a flaw.
_If you buy white or milky shades, unfortunately, they have a yellowish tint during the curing process.
_The top coat has a moderate shine and easily becomes dull.
_The biggest downside is the duration of the manicure it provides, as it only lasts a maximum of 7 days.
_You cannot file it after curing to clean up the edges, as its composition after curing is more like gel than powder (unlike other brands). As a result, if you file it, it peels off in one piece.

I'm sorry, but it's better not to buy them.

No matter how I tried, they don't last. The bad thing is that I got carried away and bought twenty shades from the regular one that promises 15 days of duration. Ten times worse. Chipped, peeled, overall no durability at all.
At least try first with one color and then get more.