A product fragrance should dazzle you. Raise your hands if you buy shampoo because of its scent. We didn't fumble this opportunity when we were choosing the flower oils for your bronzing oil. Every essential oil in Sundae Glow was chosen first for its repair compounds, and second for how it smells. The idea: a fragrance that heals as it wears.
There are four: helichrysum, ylang-ylang, carrot seed, and cassia. Each comes from a different corner of the world. Each has a centuries-long record of use before science ever caught up to explain why. The research caught up. Here is what they are doing in the formula.
Helichrysum: the plant that refuses to die
Helichrysum has been called immortelle for centuries. The flower holds its color long after it is cut and dried, and in the wild, it is often the first plant to push back through blackened ground after a wildfire. Ancient herbalists noticed the same resilience on skin, applying it to wounds and watching them close faster than expected, long before anyone could explain why.
As a colorist of over twenty years, I think of this the way I think about chelating hair before color. Chelating opens the cuticle so pigment can absorb deeper and hold longer instead of sitting on the surface. That is why helichrysum lives in both the sugar scrub and the oil. The scrub clears away what is dead so skin can actually receive what comes next, and helichrysum is already working in that step. Then the oil deepens and seals it in afterward. The repair was never locked behind one product alone — it was built to work in sequence.
The science confirmed what the herbalists saw. A 2024 study on helichrysum hydrolate documented measurably faster tissue regeneration during wound healing, with skin architecture visibly restored in the treated group. A separate line of research identified arzanol, a compound unique to helichrysum, as the mechanism behind its anti-inflammatory and antioxidant activity — working at the cellular level to interrupt inflammation and protect new tissue as it forms. A plant this old tends to have earned its reputation.
Four oils. Four continents. One formula.
Ylang-ylang: the oil that opens the ceremony
In Indonesia, ylang-ylang flowers are scattered across the marriage bed on the wedding night. In the Philippines, they are woven into the lei worn during the most sacred of ceremonies. This is an oil that cultures across Southeast Asia reached for at moments of transition — the ones that mark a life before and after.
On the skin, it opens the same way. The scent is rich and ripened, something between tropical fruit and warm vanilla, with a sweetness that reads as almost edible. It unfolds slowly, which is part of why it anchors a fragrance blend rather than leading it.
What it is doing functionally inside Sundae Glow goes beyond the scent. A study published in Pharmaceuticals examined ylang-ylang essential oil specifically for its dermatological applications and found antioxidant activity, antibacterial properties, and measurable improvements in skin hydration, sebum regulation, and the reduction of erythema. Calming, hydrating, and protective are exactly what you want in a daily oil that goes on all over the body.
Carrot seed: the awakening oil
The Cherokee used wild carrot — the plant Europeans called Queen Anne's Lace — as a dermatological remedy for generations before it was classified or studied. They were working with the same species, Daucus carota, that produces the cold-pressed seed oil now showing up in serious cosmetic formulations. The knowledge moved through oral tradition. The chemistry stayed in the plant.
Carrot seed oil smells like the earth after rain, with something green and mineral underneath. Where ylang-ylang is warm and languid, carrot seed is the note that wakes the blend up. It contributes the kind of depth that makes a fragrance feel like it was composed rather than assembled.
The compound behind much of its activity is carotol, concentrated in the seed. A 2025 study on Daucus carota bioactives documented the wound-healing mechanisms at work: targeting both the oxidative and inflammatory phases of skin repair, suppressing the cellular pathways that stall recovery, and supporting the transition into active tissue regeneration. This is what a traditional remedy looks like when you put it under a microscope and the explanation holds.
Cassia: the elder oil that dates back to biblical times
Cassia appears in the book of Exodus as one of the ingredients in the anointing oil Moses was commanded to prepare. Egyptian embalmers used it. In the ancient spice trade, it was weighed against gold. The value was not purely ceremonial, cassia was understood to have protective properties that made it irreplaceable.
It hits first on the inhale: warm, full, unmistakably spiced, with a weight to it that the other oils don't carry. As the blend settles, ylang-ylang and carrot seed reveal themselves underneath. Cassia is the reason the fragrance reads as complex rather than light. Used sparingly, as it is here, it grounds everything else.
The protective instinct behind centuries of use holds up to scrutiny. Research on Cinnamomum cassia essential oil has documented significant antioxidant activity, alongside antibacterial properties that explain why it was so valued in preservation and ritual anointing alike.
South Africa gave us helichrysum. Southeast Asia gave us ylang-ylang. The Cherokee and the wild carrot fields of North America gave us carrot seed. The ancient Near East gave us cassia.
Four corners, one formula
These four plants were being used on human skin long before clinical trials existed, on every continent, in traditions that had no knowledge of each other. They arrived at the same conclusions independently.
That convergence is the thing. Nature is already singing that tune under every rock, under every plant, in every corner of the earth. What a formula like this is doing is listening to all four at once.
The herbal infusion inside Sundae Glow carries the same philosophy — four botanicals, each independently researched, each doing something specific. The full breakdown is in Four Plants. One Infusion. Here's the Research. The full story of how the oil was built starts in Golden Hour in a Bottle.
Formulator's Notes: straight answers from 25+ years behind the bench.
