Holinic

To test the pH of a shampoo bar accurately, indeed, dissolving a small part of the bar in water and then using a pH test strip can give you a general idea. H...

Fist of all, make sure that you suffer from actual dandruff and not 'dry scalp'. The difference is explained in the Unique Hair Profile module in the...

The "weight" of a hair oil typically refers to its viscosity, density, and how it feels when applied to the hair and scalp. It's not about the ...

You may have noticed that honey is often recommended in hair and scalp masks but here is why we don’t recommend it in homemade shampoos: Honey is excellent ...

When the pH of a shampoo is too high (= too alkaline) it will have some not-so-great impact on your scalp and hair. A shampoo with too high pH will strip you...

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

If using a plain oil for its DHT blocker properties, you should indeed only keep it as pre-poo mask on your scalp as adding oil on a daily basis on your scal...

Formally, coconut oil does not have direct dihydrotestosterone (DHT) blocking properties as part of its action mechanism. Some studies are currently evaluati...

Seborrheic dermatitis and dandruff tend to overlap, you'll want to make use of the dandruff formulations. Be sure to avoid the dry scalp formulations as ...

A scalp exfoliation treatment is done 30 min to 1 hour before washing your hair. Proceed as Sarah explains in her lesson to apply the treatment, massage and ...