Pomelo Peel

In Vietnam the pomelo is not a fruit you simply eat. It is the scent of the new year, the fruit on the ancestral altar, and — for generations — a botanical folded into the ritual of washing hair.

The fruit of celebration

The pomelo — bưởi — is the largest of the citrus fruits and one of the oldest, an ancestral species from which much of the citrus family descends. In Vietnam it carries a weight that goes beyond the kitchen. At Tết, the lunar new year, a whole pomelo sits at the centre of the five-fruit tray on the family altar, chosen for its size and its promise of abundance. The blossom perfumes the spring air; the thick peel is dried, simmered, and pressed for its fragrant oil.

That peel is where the botanical interest lies. The flesh is for eating, but the outer rind — bright, resinous, faintly bitter — is where the aromatic and functional compounds concentrate.

The role of pomelo in the formula

The peel of the pomelo — particularly the outer peel, the flavedo — is rich in flavonoids and in limonene, and those compounds are not only aromatic. Research on Citrus grandis peel shows antimicrobial and antifungal activity: pomelo peel oil inhibits organisms including Staphylococcus aureus, and Vietnamese citrus essential oils show activity against fungi. In the context of a cleansing step, that points toward a broader intention — a scalp in balance, where the natural microbial community is left to function undisturbed, rather than a scalp scrubbed sterile.

We are precise about this. That evidence concerns the peel and its concentrated extracts; in a rinse-off shampoo we make no claim to antimicrobially treat the scalp. Pomelo is listed on the INCI with an antioxidant function, but in a wash-off format the contact time is too short to attach a scalp antioxidant promise to it — so we don’t. What pomelo unmistakably contributes here is twofold and real: the fragrance, and a thread of Vietnamese culture.

The fragrance dimension

Pomelo peel carries a scent that is bright, green, and faintly bitter — cleaner and less sweet than orange, with a cultural weight that synthetic citrus notes cannot reproduce. In Vietnam the pomelo is inseparable from Tết: the fruit on the altar, the peel simmered for its oil, the blossom used to scent hair and water. To build a shampoo’s scent signature around pomelo peel is not a fragrance decision alone; it is a decision about where the product comes from.

This is the honest reason pomelo earns its place: not a performance claim on the scalp, but a sensory and cultural signature that is true to the tradition the brand carries forward.

The furocoumarin requirement

Citrus peel extracts demand care under EU cosmetics regulation. Pomelo peel can contain furocoumarins — such as bergapten — which are phototoxic and are restricted under Annex III of Regulation (EC) No 1223/2009. For any product intended for the EU market, the extract must be specified as furocoumarin-free, confirmed by a Certificate of Analysis from the supplier. This is not a formulation afterthought; it is a condition of using the ingredient at all.