Research was done to evaluate the efficacy of Salisylic Acid as a way to manage the symptoms of scalp psoriasis and it found out that it is a remarkable ingredients for managing symptoms.
How does it work ?
Salicylic acid is a keratolytic, which means that it breaks down and removes the buildup of dead skin cells which is why it is commonly used for topical applications related to our skin.
The way it works is by digesting the keratin in your dead skin which helps the scales of skin or dead skin cells to peel of easily.
How long has it been used for ? Is it safe to use ?
It has been used since the 1950s in combination with other medications as well as a standalone ingredients for many applications.
What is the right % formulation of Salisylic Acid ?
Due to its acidic nature, it can be an irritant causing skin barrier disruption which is why researchers use a modest 3 % Salisylic Acid in topical products. People with sensitive skin especially ones suffering from psoriasis are the most susceptible to such irritation and should use formulations that do not exceed the 3 % threshold as recommended by doctors.
How long does it take to work ?
Research found out that a once-daily application of 3 % Salisylic Acid based product for three to four weeks resulted in around 25 percent reduction in symptoms and a 12 week application resulted in almost 50 percent reduction in psoriasis symptoms.