I have been dyeing my hair blonde by myself for 2 years. Roots and highlights every month. I tried (because the company sent it to me since I make hair videos) the Lorvenn Blondissima as a powder and I will rate it taking into account two factors.
1) Ease of use at home
2) Performance.
1) If you have bleached your hair by yourself before, it is an excellent choice; for a first-time bleach it might seem a bit "abrupt" as it lightens much faster than the ones I usually used and even with a lower vol. I combined it with the company's 25vol (DO NOT use a higher one, I have very dark roots) and it was excellent, this is the third time I have used it. However, I repeat, it is harsher than others, e.g. L’Oréal Blond Studio 8 which is easier for beginners.
2) Excellent performance. Especially with the colors the company has, the result is incredible. In terms of colors, after lightening I used the Color Pure Lorvenn dye in 10.20 and 10.03 and it was top (in the photo, these are the colors I used). It perfectly lightens the roots without patches. I shampoo in 2 stages (first half the head and then the rest) so that it is even and does not burn. NEVER over 55 minutes on the head from the time of application.
That's it. I am very satisfied, it also has an excellent price