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Active Ingredients

4-Butylresorcinol

Often labeled as: Rucinol

The extremely potent, Hydroquinone-beating brightener.

๐Ÿ›ก๏ธ
Overall Safety Safe
๐Ÿ‘ถ
Pregnancy Safety Safe
๐Ÿ•ณ๏ธ
Comedogenic (0-5) 0 / 5
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Irritancy (0-5) 1 / 5

๐Ÿ”ฌ How It Actually Works

A highly effective synthetic derivative of resorcinol. Clinical studies show it strongly inhibits both tyrosinase and TRP-1 enzymes, making it one of the most powerful skin brighteners available.

๐Ÿ’– Why your skin loves it

Rapidly fades stubborn melasma, severe dark spots, and post-inflammatory hyperpigmentation.

๐Ÿ’ก Pro Tip

Highly effective even at very low concentrations (0.1% - 0.3%).

โš–๏ธ Myth vs. Fact

The Myth

It causes permanent skin bleaching.

The Science

It is highly effective but reversible; it only suppresses melanin production while you use it.

๐Ÿงด Formulations featuring 4-Butylresorcinol