Iran Strait Closure and the Naphtha Shock Hitting Europe

What looks, at first glance, like a distant geopolitical dispute is in fact set to hit wallets across Central Europe. Iran’s closure of a key maritime corridor exposes a weak point in the global economy: the supply of naphtha, the most important feedstock in petrochemicals. Within a few weeks, the knock-on effects could show up harshly in supermarkets, pharmacies and fashion chains.

Naphtha: the invisible substance behind almost everything we touch

By blocking the sea lane through which around 4 million tonnes of naphtha are normally shipped each month, a tight bottleneck has been shut. Naphtha is produced during crude oil refining and is regarded as a foundational building block of global petrochemicals.

From this material, the chemical industry produces basic molecules that are then used to make a near-unmanageable range of everyday goods. These include, for example:

• Plastic packaging for food, drinks and hygiene items
• Synthetic textile fibres for sportswear, fast fashion and technical jackets
• Varnishes, paints and coatings for cars and the home
• Cosmetics such as creams, make-up, shampoo and shower gel
• Tyres, seals and other rubber products
• Active pharmaceutical ingredients and excipients used in many medicines
• Solvents and cleaning agents for industry and households

"More than nine out of ten objects in our surroundings depend directly or indirectly on petrochemical products - and therefore on naphtha."

When this single feedstock becomes scarce or its price surges, it sets off a chain reaction of cost increases. The impact is not limited to petrol: it spreads across the entire range of goods that rely on oil-based chemistry.

A supply chain already under strain falls out of sync

Even before the latest conflict, the petrochemical supply chain was under pressure. In Europe, the sector was still grappling with the energy price shocks of recent years. The year 2022 in particular, with extremely expensive gas and electricity, weighed heavily on the balance sheets of many chemical companies.

In Germany - an industrial heavyweight in this area - the indicators were already turning downwards in the fourth quarter of 2025. Output, prices and sales volumes all declined. The industry association VCI, which represents more than 2,000 companies and over half a million jobs, warned early on of a structural weakening of the chemicals sector.

With the new tensions involving Iran, the situation has tightened further. Since the dispute began, oil prices have risen by around 40 per cent, while natural gas has become about 50 per cent more expensive. For chemical producers in Europe, that translates directly into sharply higher energy costs.

On gas alone, the annual bill could rise by around 3 billion euros if prices stay where they are. Several major players - including Asian producers and LyondellBasell - have already declared “force majeure”. That allows them to suspend supply contracts without paying penalties.

Price rises with a delay: the shock reaches customers later

For now, most shelves in pharmacies and chemists remain well stocked, and clothing rails in fashion shops still look full. But that impression is misleading. Many active supply chains are still running on inventory bought earlier, at substantially lower prices.

"Specialists expect the real wave of price shocks to reach end consumers in around two months."

This comes down to how production chains are structured. From buying naphtha to placing the finished product on the shelf, several weeks - and sometimes months - can pass. Only when the more expensive batches of feedstock have fully worked their way through manufacturing do the new costs begin to appear in retail prices.

Where consumers are likely to feel the biggest price jumps

According to industry insiders, the heaviest impact is expected in the following areas:

• Medicines: Many tablets, ointments and capsules contain petrochemical components. Packaging such as blister films and bottles will also become more expensive.
• Textiles: Synthetic fibres such as polyester, nylon or elastane are oil-based. Sportswear and low-cost everyday clothing could rise noticeably in price.
• Cosmetics: From skin creams and deodorants to perfumes, many formulations depend on petrochemical feedstocks.
• Car and cycling: Tyres, interior plastics, paints and lubricants are all under cost pressure.
• Household goods: Plastic containers, films, toys and cleaning products - naphtha-derived chemistry is embedded throughout.

Retailers are likely to try to stagger price increases. Even so, internal calculations are already pointing to “noticeable to massive” mark-ups across multiple product groups if the bottleneck persists.

Why Europe is particularly vulnerable

Europe - and again, especially Germany - relies heavily on imported fossil raw materials. At the same time, energy prices on the continent are high by international standards. That makes producing chemical intermediates in Europe far more expensive than in regions with cheaper gas and oil, such as the Middle East or parts of Asia.

With each additional price spike, pressure grows on companies to relocate production or temporarily shut down plants. That puts jobs at risk not only in chemicals, but across downstream industries - from mechanical engineering and the automotive sector to packaging.

If the industrial base becomes destabilised, the long-term consequences can be severe: loss of know-how, reduced investment in research and innovation, and greater reliance on imports for critical intermediates - including important active pharmaceutical ingredients.

What consumers can do now

Individual households cannot change the global situation, but they can reduce their own exposure. A few practical steps include:

• Check essentials: Sensibly top up frequently used medicines such as painkillers or allergy tablets - without panic buying.
• Choose quality over disposables: Buy better-made clothing or durable household items that can be repaired.
• Avoid unnecessary packaging: Pick products with less plastic packaging, such as refills or “packaging-free” options.
• Use alternatives: Where possible, opt for natural fibres such as cotton, wool or linen.

These choices reduce immediate consumption of petrochemical products and can also make household budgets a little more resilient against sudden price spikes.

What terms like “force majeure” and “naphtha” actually mean

Many of the technical terms used in this context can sound abstract, yet they carry direct consequences for consumers.

Naphtha is a highly flammable liquid produced during crude oil distillation. Petrochemicals use it as a starting point for a wide range of downstream products. In steam crackers, naphtha is broken into smaller molecules such as ethylene, propylene or butadiene - the real “building blocks” of modern industrial goods.

“Force majeure” is a legal term used in supply contracts. It applies when events occur outside a company’s control, such as wars, natural disasters or government intervention. If a corporation declares force majeure, it can reduce or halt deliveries without paying contractual penalties. For buyers, the practical effect is immediate: they must find alternative sources at short notice, usually at significantly higher prices.

Longer-term risks for supply and prices

How long the current escalation will last remains unclear. If the conflict drags on for months, the risk increases that it will not only push up prices, but also make certain products temporarily scarce. Shortages of specific active ingredients could force pharmacies to switch to alternative medicines or dispense prescriptions in smaller parts.

The textiles and cosmetics sectors could also see ranges cut back if intermediate goods fail to arrive in time. Manufacturers would then prioritise higher-margin lines, while cheaper entry-level options are discontinued. For lower-income households, that is particularly painful.

At the same time, the crisis is shifting the debate about the future of Europe’s chemical industry. Those calling for a faster transition to bio-based feedstocks, recycled material streams and greater energy efficiency feel vindicated. Yet that route is long and expensive - and it does not solve the immediate problem in the short term.

For consumers, the coming months point to an uncomfortable reality: a geopolitical dispute over a maritime corridor acts like a magnifying glass on a sector that was already stretched. Anyone wondering why shampoo, a T-shirt and tablets suddenly cost more at the till will not find the answer on the shelf, but in the tanker that can no longer deliver naphtha.