So yes, it has a risk to tint your hair a bit if it's blond or lighter colour. However all hair reacts differently so we recommend doing a patch test on a few strands. The more oil you use or the longer you'll leave the oil on your hair, the more risks for the tint to transfer to your hair. For very light hair we'd recommend first testing with 15-20 pre-poo application then rinsing out and seeing from there if the patch test is ok or not. You can also consider mixing this oil with another carrier oil to reduce the risk of colouring while enjoying the benefits of this oil. Be careful, as usual we recommend to use only small quantities of any oil for your treatment to avoid having to over-wash your hair to get rid of the greasiness ;-)