Thanks so much for sharing your concern on this topic. We love that you're doing your own research and are critical about claims like this. The research used in the studies your referring to is not very conclusive. The study that is getting the most attention (2004 issue of the Journal of Applied Toxicology) on this topic did not prove a direct link between breast cancer and parabens. They found traces of parabens in 18 of 20 tumor samples. However, the problem with this is 3 fold: 1) The tiny sample size 2) The study did not "look" for parabens, so it wasn't designed to prove a direct link 3) Correlation does not equal causality (just because they found parabens in the tissue doesn't mean that parabens caused cancer) They did prove that parabens can travel through the skin, but even for that piece of evidence, the tissue used wasn't the type of tissue parabens would have to cross in reality. This is also why the FDA has not banned this ingredient. As mentioned in the video, parabens are in most food items these days and have not caused any public safety concerns. Other products, such as soy, that, similarly to parabens, can have mild estrogenic effects. So far, soy has not been linked to cancer growth either. This makes sense considering that (premenopausal) your ovaries produce significantly higher amounts of estrogen or are taken in through birth control pills or hormone therapy. Please keep in mind that this is not medical advice, and this is no endorsement of parabens. You're still free to stay away from them. We're using the parabens example to illustrate that we often don't know which bad ingredients are inside our products. We believe them to be safe because they are "Free from..." when in reality, we're presented with substitutes that are bad in their own way. Haircare is a science, and we continuously re-evaluate our position on what's good and what's bad. If we find convincing evidence that makes us change our position, we'll notify all past and current members via email.