I have been using these razors for facial shaving since I was 13 and now I am 30.
In general, their advantage is easy cleaning, the absence of lubricating strips, and the one and only blade that will cut your hair, pimples, spots, cheeks, morning greetings, etc. In other words, each razor lasts for 3-4+ times depending on the thickness and density of the hair.
Obviously, they are not jack of all trades razors. When I was younger, I made the mistake of fully shaving (military shaving) with these razors and ended up butchered. For such cases, I recommend razors with 2-3 blades that are truly disposable. The only shaving I see now that these razors serve is for the cheeks and the neck around existing and maintained beards (i.e. clean-up or touch-up use).

Star 1, because it has nothing. Stay away from this razor. I decided to change, the one blade impressed me, BUT? It's a disaster, no protection, head, face, it cleaned me up. Full irritation and blood. Skin even came off my head. Throw it away from the start. The only positive thing is that it cleans easily. Nothing else.

It doesn't compare to simple Bic razors, it irritates the skin and cuts with the slightest touch as if you're using old-fashioned razors.
With the classic simple Bic one-blade and the yellow cap, I finish shaving in 1 minute.
So, whoever wants a quick and safe shave should stay away

Excellent for their price.

Very decent result, each razor definitely gives 2-3 shaves, depending on the case of course.

Very good razor, classic old recipe.
It is for shaving experts, not rushed movements, preparation of the skin (leave the foam for 1 minute before starting).
The best razor for tough hair does not clog at all.
I have preferred it for years, I have tried double, triple, quadruple razors, and blue bears.
The inexperienced will cut themselves, but once they learn, they will not change it.

The best razor by far. Despite being very lightweight, you shouldn't apply any pressure at all. The thin head it has gives you absolute control. It is the closest thing to Schick injector razors for those who remember. It just takes a little time to get used to it. If you have irritations and cuts, it's not the razor's fault but your technique.

Negatives:
- I used them only once, just to try them out. The shaving experience was not pleasant and I had several irritations and cuts. Some rightly point out that inexperience and incorrect technique are responsible for the irritations and cuts. Of course, these parameters will be checked. However, with the same technique and the same preparation of the skin, you will see a huge difference between this product and a 5-blade razor. In the second case, you will realize how much more pleasant, faster, and effective shaving can be. Without irritations and without cuts...
- So, I would not recommend them, especially if you have sensitive skin.

Additional Notes:
- It is good to avoid using disposable razors and filling the planet with plastic waste.
- I hope that the working conditions at the company are as expected.