The Bạch
Library
A place to learn. Not to shop. We believe that trust is built through knowledge — and that the science and culture behind Vietnamese botanical hair care deserves to be told in full.
Botanical Atlas
The complete encyclopaedia of every botanical we use
Every plant documented — botany, traditional use, active compounds, published research, and the concentration at which it performs.
Botanical Atlas
Bồ Kết: five centuries of Vietnamese cleansing ritual
The triterpenoid saponins of Gleditsia australis — and why a decoction at 20% works differently from a concentrated extract at 1%.
Read →Botanical Atlas
Fermented Rice Water: what nước vo gạo actually does
Inositol — a molecule small enough to enter the hair shaft rather than coat it — and how far the evidence actually goes.
Read →Botanical Atlas
Pomelo Peel: the scent of celebration, the function of antioxidant
Bưởi — culturally significant across northern Vietnam, and the aromatic signature of the Botanical Scalp Shampoo.
Read →Hair Science
Why your shampoo’s surfactant system matters more than you think
The difference between SLES and SCI + CAPB — and why that single formulation choice determines scalp health over months and years.
Read →Hair Science
Does Coconut Oil actually protect hair?
The one common oil with real evidence it penetrates the hair and reduces protein loss.
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Are Sulfates Actually Toxic?
What SLS and SLES actually are, and why sulfate-free isn’t a toxicity claim — it’s a formulation choice.
Read →Hair Science
Does Bồ Kết actually clean?
Peer-reviewed studies confirm Bồ Kết’s saponins genuinely cleanse, foam and emulsify — and show, just as clearly, what they do not do.
Read →Hair Science
How to read an INCI list: a consumer’s guide to real ingredients
The INCI list is a contract, not a footnote. Learn how to spot fairy dusting and hold brands to their claims.
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Rice water or coconut: why one conditioner is always a compromise
Inositol penetration versus lauric acid penetration — two mechanisms, two hair types, one honest formulation decision.
Read →Coming soon
More articles on hair biology, scalp microbiome, and formulation science.
Scalp Guide
Understanding your scalp — and working with it
Honest, evidence-based guidance on scalp behaviour, hair type, and how to choose the right ritual for your specific needs.
Scalp Guide
Your scalp has a cycle: what hormones actually do to sebum
Progesterone, the luteal phase, and why washing frequency — not product change — is the honest answer to a hormonally oilier scalp.
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That tight feeling after washing is not clean — it is stripped
What aggressive cleansing does to your acid mantle, why your scalp gets greasy faster as a result, and how to break the cycle.
Read →Scalp Guide
The scalp is skin — and it always was
The scalp has a barrier, a microbiome, and a rhythm of its own. What the skinification trend gets right — and what a five-century-old Vietnamese ritual understood first.
Read →Rituals
The practices that carried this knowledge across centuries
Not instructions. Stories. The rituals that Vietnamese families performed before any of this was written down — and what they knew that science is still catching up with.
Rituals
The Bồ Kết ritual: how it has always been done
The pods, the water, the lemongrass, the fire, the copper pot. What five centuries of Vietnamese hair washing ritual actually looks like — and what it means.
Read →Coming soon
The nước vo gạo rinse — preparation, timing, and where it sits in the Vietnamese wash.
Coming soon
More rituals from the Vietnamese botanical tradition.