This was the first natural dye I tried, to be honest, it was the only one I could find at the time. Although it had no ammonia, no parabens, no resorcinol it did contain hydrogen peroxide and phenylenediamines. Scientists are particularly worried about the long-term effects of PPD, or para-Phenylenediamine, used in dark hair dyes as the darker colours are formed by using higher concentrations. It covered the grey hair but I found it quite harsh and left my hair dry and brittle.
The Morrocco Method
This henna dye promises to never compromise health for beauty. They only use wildcrafted ingredients like marine proteins, herbs, minerals and 100% natural botanicals to create the dye. These dyes are non-allergenic and non-toxic to encourage healthy hair growth which is great. Unfortunately, I found it made my blonde colour a tad brassy but it works particularly well on the darker colours which is good as they have higher concentrations of chemicals. One of my good friends who has a dark brown colouring uses it with great success and loves it. I would also note it was quite messy to apply so make sure to protect your clothes and apply it in an area that can be easily wiped clean like the kitchen or bathroom if you are applying it at home. You can order this online Here and they ship to Ireland which is great.