Some By Mi AHA BHA PHA 30 Days Miracle Toner Versus SKIN1004 Madagascar Centella Tea-Trica Purifying Toner

This ingredient is created by distilling parts of the tea tree plant. The bark and leaves of the tea tree plant are rich in Terpinen, an antioxidant, antibacterial, and anti-inflammatory ingredient.

Tea tree may cause sensitivity and irritation for some people due to its linalool and limonene content.

Salicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.

Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.

Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.

Its main functions are to maintain the pH of a product and neutralize metal ions.

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.