“Dark by Rior PRO Base 02, 30ml” is already in English. If you want, I can also: - make it sound more natural for a product title, - translate it into Spanish, or - polish the wording for an online store listing.

DARK PRO BASE are low-acidity, medium-consistency camouflage bases designed to cover the nails with a thin or medium layer.

Description:

• low-acidity camouflage bases (pH 6.5);
• pigmentation level from 1 to 3.5 (on a 4-point scale), with good curing;
• do not flake over time;
• do not cause a strong burning sensation in the lamp;
• rather liquid consistency, which allows for thin and fast leveling;
• not rigid, but rather flexible.

Instructions for use:
Perform the manicure, buff, degrease the nail, and apply Dehydrator and Ultrabond.
Before applying PRO BASE, it is necessary to apply a thin layer of transparent SCOTCH BASE (or another medium-acidity base) for better adhesion.
This is important because adhesion to the natural nail requires a medium-acidity base. At the same time, remember that with a medium-acidity base you should not do leveling, only apply a thin layer to avoid chemical burns.
Apply a thin or leveling layer of DARK PRO BASE. The layer thickness should not exceed 0.7 mm. Curing time is 60–90 seconds in an original lamp.
Apply the chosen top coat and cure for 90–120 seconds.

Usage details:
It is not recommended to use these bases on long and very thin nails, or for strongly squared shapes with sharp corners. For this type of nail, rigid materials are recommended.
If the client arrives with nails that need to be shortened, it is recommended to do so after applying the top coat (1 mm). This will make the edge slightly thicker and improve the durability of the material.