What is the best way to prepare and apply the powder, and are there any practical tips for first-time users? — Natural henna 3*20 grams - BIO VITAL

Start with a non-metallic bowl and spoon — metal can react with the herbal pigments. Mix one 20 g sachet (or the amount you need) with warm water, roughly 60–70 °C, until you have a smooth, yogurt-thick paste. Let it rest for 10–15 minutes so the plant particles fully hydrate; this improves colour release. Apply to clean, damp hair, section by section, working from roots to ends. Wear gloves and protect clothing and surfaces — henna stains are persistent. Cover with a shower cap or cling film and keep warm (a towel turban helps) for 1–3 hours; longer contact generally yields deeper tone, but do not exceed the time suggested on the pack. Rinse thoroughly with water only — skip shampoo for the first 24–48 hours to let the colour oxidise and settle. For your very first use, always do a strand test on a hidden section, especially if your hair is bleached, heavily processed, or mostly grey. This reveals how the shade develops on your specific hair and whether you like the texture change.