About

The Rasa Theory is a working journal about cold process soap. Not recipes to sell you a kit, and not the same eight paragraphs of “natural is better” you have already read. This is actual working knowledge: what saponification does to a fat, why a bar needs weeks rather than days before it is worth using, what superfat percentages really change, and how to read an ingredients list without being sold to.

Who writes this

We make cold process soap in small batches in India, and most of what shows up here started as a note-to-self after a batch went wrong. The articles are the answers we wished had existed when we started.

The rules we hold ourselves to

• No affiliate links. Nothing here earns a commission. If a link goes to a product, it is because it is the thing being discussed.
• Tradition is kept apart from evidence. Many Indian botanicals have long traditional uses. We say which claims are traditional and which are proven, and never blur the two.
• Chemistry gets cited. Saponification values, lye ratios and cure timelines come from published references, not from repeating what other blogs say.
• Corrections stay visible. When an article is wrong we fix it in place and stamp it with an updated date rather than quietly editing it.
• Safety is never softened. Sodium hydroxide causes chemical burns. Any article that touches it says so plainly, every time.

Getting in touch

Corrections, disagreements and “you got this backwards” emails are all welcome. They are the fastest way this gets better.