# Why did my soap turn brown?

> Melt and pour soap bases will not discolor on their own however depending on what additional ingredients were added to your soaps those ingredients could cau

Source: https://support.candlescience.com/en_us/why-did-my-soap-turn-brown-rJoPXBRWg

Last updated: 2026-05-14T18:37:07.707Z

Melt and pour soap discoloration is usually due to natural reactions with the fragrance you're using. Fragrances that have vanillin, cinnamon, citrus, or many floral notes are the most likely to turn your soap to a light to dark brown color, but other fragrance components can also cause this behavior. Color changes can happen in both melt and pour soaps or cold process soap-making but the good news is this discoloration will not negatively affect the smell or performance of your finished soaps.

When trying a new fragrance, it is helpful to make a small test batch to see how it affects the soap's final color. You can then decide whether to incorporate that color change into your design or use dyes to help mask it. For example, you can create contrast by adding swirls of unscented soap or by using unscented white or colored bases as layers or embeds, ensuring the bar isn't just a solid brown. While this isn’t something we carry, there are additives known as “vanilla color stabilizers” or “vanillin color stabilizers” that can help reduce this discoloration too.

If you'd like to see the vanillin content of a certain fragrance oil, we will always list the vanillin content under the properties section on each fragrance page. You can also use our [Fragrance Finder](https://www.candlescience.com/fragrance-oil-finder/) tool to filter down to all of our vanillin-free fragrances for easy reference.