We Test Every Batch. Here’s What That Actually Means.

“Pure” is everywhere in beauty. On labels, in ads, in product pages designed to reassure. But pure compared to what?

We built Aumenta around that question. Instead of relying on language, we rely on testing. Here’s what we check in every batch of Brilho Brasileiro before it enters the bottle, and why it matters for your scalp and hair.

Cold-pressed describes the extraction method. No added heat, which helps preserve fatty acids and naturally occurring compounds in castor oil. That is a strong baseline. But it does not confirm quality on its own. It does not tell you composition, freshness, or safety. For that, we test.

First, the fatty acid profile. Castor oil is known for ricinoleic acid, typically around 85 to 90 percent. This fatty acid is linked to the oil’s conditioning feel on scalp and strands. We use gas chromatography to confirm the exact percentage in each batch. If it falls outside our range, it can signal dilution or lower-quality pressing.

Next, heavy metals. Castor plants can absorb metals from the soil, which makes origin important. We test for lead, arsenic, cadmium, and mercury against international safety standards. Our sourcing in Brazil is intentional, and testing verifies that each time.

We also test for pesticide residues. Organic farming reduces risk, but it does not eliminate it. Drift from nearby crops or water can introduce trace residues. Lab testing confirms that what is not supposed to be there is truly absent.

Freshness is another focus. Peroxide value and acid value help us understand whether an oil has started to oxidize. As these values rise, the oil can feel harsher on the scalp and less effective overall. We only bottle within a freshness window we trust.

Moisture content matters too. Even small amounts of water in oil can create conditions where microbes grow. We use Karl Fischer testing for a precise measurement. It is more common in pharmaceutical settings, but it has a clear role here.

Finally, microbiology. We screen for bacteria, yeast, and mold. A clean composition is not enough if microbial levels are off. This is our last checkpoint before a batch is approved.

We share all of this for a reason. Ingredient clarity should not rely on soft language alone. Terms like “clean” and “natural” can be meaningful, but without data they stay vague. We prefer to show the structure behind the claim.

If you want to see a batch report, you can ask. We will share it.

Brilho Brasileiro. Cold-pressed. Lab-tested. Sourced with intention in Brazil, with results we can show.