concrete gets a beautiful patina with time, that’s why it is so attractive.
air bubbles, minor imperfections and slight color differencies are typical for concrete.
each piece is carefully handmade, sanded and sealed.
it takes water, soap, but be careful with fats.
black concrete can be slightly oiled with natural oils (coconut oil is the best!), if the color is fading.
if it accidentally gets dirty, you can gently grind it with a smooth grind paper.
harsher treatment is fine, free falls from a great height not so much.
not suitable for eating.