Who is Tiffany Zack, Director of Sustainability at Baxter?

After 13 years at The Estée Lauder Companies, Tiffany Zack has moved to Baxter International, joining as its new Director of Sustainability.

She brings experience in building and integrating corporate sustainability into business operations.

At Baxter, she will be working under experienced CSO Renae Kezar, who took on her role in June 2025.

Tiffany’s career so far

Tiffany’s career at The Estée Lauder Companies began in 2011, when she joined as a Project Assistant to Senior Vice President, Latin America.

She worked her way up the company, taking her first sustainability role in 2020 as Senior Sustainability Manager, Global Online.

In this role, she led sustainability marketing across online platforms, reinforcing leadership in sustainable beauty.

In 2021, Tiffany became Director of Sustainability, Global Online & Global Supply Chain.

She held this position for seven months, where she developed and led the Global Online Sustainability strategy at The Estée Lauder Companies.

Here she integrated carbon reduction, sustainable packaging, responsible sourcing and consumer engagement into the company’s operations to advance its corporate ESG goals.

In 2022, she took on the role of Director of Sustainability, Product, which she held for more than three years.

She led global workstreams to advance product sustainability, as well as The Estée Lauder Companies’ nature and biodiversity strategy.

Tiffany helped to launch the enterprise-wide Modern Slavery Statement and updated the company’s Human Rights Policy.

She also advised senior leadership on ESG risks and priorities and supported brand and product teams in embedding sustainability into product and packaging decisions.

Tiffany’s new position

Tiffany announced the move to Baxter in April, with the move itself taking place in February.

She will bring her experience from The Estée Lauder Companies to Baxter, including expertise in driving environmental and social responsibility, with a focus on nature, biodiversity and human rights.

She will use her skills in aligning business strategies with sustainability goals to help deliver measurable, long-term impact across Baxter’s global operations.

Tiffany said on LinkedIn: “After more than a decade of learning and growth with The Estée Lauder Companies, I’m excited to share that I’ve recently joined Baxter International as Director of Sustainability.

“This new chapter comes with tremendous momentum and purpose as we continue to build and advance initiatives that deliver sustainable healthcare and strengthen climate resilience.

“I’m grateful to join Renae Kezar and a team of leaders who are deeply passionate about driving meaningful change, both within Baxter and across the broader global sustainability landscape while remaining grounded in our missions to save and sustain lives.

“Looking forward to learning, partnering and helping shape what comes next. A huge thank you to all my mentors, peers and former colleagues who supported me along this journey.”

Sustainability, procurement and supply chain leaders won’t want to miss Sustainability LIVE: The US Summit, taking place at Navy Pier, Chicago, on 21–22 April. 

Co-located with Procurement & Supply Chain LIVE, the event unites senior decision-makers at a time when supply chains, sustainability and business performance are more interdependent than ever.

Secure your place now for The US Summit – group booking discounts available.

Sustainability at Baxter

Baxter released its first sustainability report in 1997, showing its efforts to reduce its environmental impact.

It has continued this for almost 30 years, accurately reporting on its emissions and reduction initiatives.

It aims to achieve carbon neutrality for its direct operations by 2040.

As part of this ambition, Baxter aims to reduce its absolute Scope 1 and 2 greenhouse gas emissions by 25% by 2030.

Its most recent sustainability report says that 99% of its emissions come from energy use and it is working on energy efficiency in its operations. 

The company has completed four on-site solar installations and has installed a biomass fired steam generator at its site in Ahmedabad, India.

It also purchased 5.4 GW of electricity generated from certified renewable sources during 2024.