A bar made with palm oil holds its edge in the dish, resists going soft in standing water, and produces a lather that is dense and slow rather than airy, closer to cream than foam. That set of properties explains why palm oil has been a soapmaker’s staple for more than a century, and why removing it is harder than it sounds.
Palm oil comes from the fruit of the oil palm, Elaeis guineensis, a tree native to West Africa and now grown across the humid tropics, with Indonesia and Malaysia producing the large majority of the world’s supply. The fruit grows in heavy clusters; each cluster carries dozens of plum-sized drupes, and the oil is pressed from the orange flesh. Palm kernel oil, a separate product, comes from the seed inside. Both turn up in soap, and the distinction matters: the flesh oil contributes hardness, the kernel oil contributes cleansing and a quicker lather. Most discussion of “palm oil” collapses the two.
What the oil does in a bar
In cold-process soapmaking, the choice of oils is a choice of properties. Olive oil gives a mild, conditioning bar that lathers low and stays soft. Coconut oil cleanses hard and lathers fast but can leave skin tight. Palm oil sits in between, it lends structure and longevity without the stripping edge of coconut, and it does so cheaply and consistently.
This is the practical reason it became ubiquitous. A soapmaker can build a balanced, long-lasting bar around palm oil more easily than around almost any single alternative. The fatty acid profile, high in palmitic and oleic acids, produces a stable, creamy lather that few other oils match at the same price. Reformulating without it means substituting a blend of harder butters and waxes, often tallow or shea, and accepting either higher cost or different behaviour in the dish.
The same logic that governs base oils governs scent. A material earns its place in a formula because of what it contributes, not because of its reputation, the way a perfumer reaches for Atlas or Virginia cedarwood for the specific quality each one carries rather than out of habit.
The cost that travels with it
The environmental record of palm oil is not in dispute. Across Southeast Asia, expansion of oil palm plantations has driven significant deforestation, including the clearing of lowland rainforest and the draining of carbon-rich peatlands. Peatland drainage releases stored carbon over decades and is among the most damaging consequences of the trade. Habitat loss has pushed species such as the orangutan, the Sumatran tiger, and the pygmy elephant toward steep decline.
These costs are concentrated. They fall on specific landscapes and specific species, which makes them legible in a way that diffuse environmental harms are not. That legibility is part of why palm oil became a target, it is easier to picture a cleared forest than a carbon ledger.
The certification, and what it can and cannot do
The Roundtable on Sustainable Palm Oil, formed in 2004, exists to address exactly this. RSPO certification sets standards for growers: no clearing of primary forest or high-conservation-value land, restrictions on peatland development, requirements around labour and land rights. Oil that meets the standard can be sold as certified sustainable, and a bar labelled with RSPO palm oil draws from that supply.
The certification has real critics. Enforcement across thousands of smallholdings and large estates is difficult, and the system’s mass-balance accounting allows certified and uncertified oil to be mixed in some supply chains, so that a “sustainable” label does not always trace a physical chain back to a compliant plantation. RSPO is a meaningful instrument and an imperfect one. Both things are true.
In response, a palm-free movement has grown, particularly among smaller soapmakers. The argument is straightforward: if the supply chain cannot be trusted, refuse the input entirely. It is a defensible position, and for many makers it is the simpler one to stand behind.
The yield paradox
Here the question stops being simple. The oil palm is, by a wide margin, the most productive oil crop on earth. Per hectare, it yields several times more oil than rapeseed, sunflower, or soy. A field of soybeans produces a fraction of the oil that the same field of oil palms would.
That fact reframes the boycott. If demand for vegetable oil holds steady and palm is removed from the equation, the demand does not disappear, it moves to a substitute. And because every substitute yields less per hectare, satisfying that demand requires more land, not less. A straight refusal of palm oil can, at scale, push cultivation toward crops that occupy a larger footprint, potentially in regions with their own conservation stakes. The clearing does not stop; it relocates.
This is the paradox that makes “sustainable sourcing versus avoidance” a real debate rather than a settled one. Avoidance is clean as a personal choice and ambiguous as a global outcome. Certified sourcing keeps the most efficient crop in play while attempting to govern how it is grown, and depends entirely on whether that governance holds.
What this means for a bar of soap
Neither position resolves cleanly into the other. A soapmaker who chooses certified palm oil is betting that engagement improves the system. One who goes palm-free is removing themselves from a supply chain they cannot verify and accepting the trade-offs of substitution. Both are reasonable. Neither is costless.
What is not reasonable is pretending the choice is obvious. Palm oil earns its place in soap through genuine functional advantages and carries genuine harms, and the most efficient crop on earth is also one of the most damaging when grown badly. The reader who wants a single right answer will not find one here.
We name our oils plainly and let the formulation speak for what it does in the hand. The same discipline governs how we treat a single ingredient’s reputation versus its behaviour, the gap between what a material is claimed to carry and what it measurably does is where most confusion lives. With palm oil, the honest account is that the trade-offs are real on every side, and worth understanding before deciding.