Holinic

Probably not. Shampoo B naturally lathers less than Shampoo A because it’s a completely plant-based cleanser, and reetha foam is softer and less bubbly. Usin...

In general, as long as you ensure that your product’s final pH is between 4.5 to 5.5, the lemon should not be causing issues, unless you are sensitive to thi...

You can, but it depends on your scalp. Aloe is soothing and hydrating, but daily use can sometimes cause a light build-up if not rinsed off well. Since you w...

If you’re using fresh aloe gel as is, the pH is naturally around 4.5–5, which is fine for the scalp. No need to test unless you’re mixing it with other ingre...

Preservatives are meant to be used in very specific dosages — too much can irritate the scalp and doesn’t make the product “extra safe.” Stick to the recomme...

It definitely feels contradictory to have both a surfactant and a silicone in your shampoo, as one should be removing the other, right? Well, as you mentione...

Great question. Some ingredients in conditioners—like Stearalkonium Chloride—are technically classified as surfactants, but they don’t act as cleansers. In c...

There are a number of things that can lower vitamin D absorption — for example, fat-blocking supplements or medications (like orlistat or mineral oil), very ...

That can feel scary, but it doesn’t always mean something is wrong. Here are some possible reasons and what you can do: ** Your scalp may be sensitive to an...

Absolutely — the pH of your water does influence your hair, especially over time. Tap water is often neutral to slightly alkaline (pH 7–8), while your scalp...