CULTURE
FUELS
GROWTH.

We prove it.

INFUSION by Castells is a leading multicultural marketing and advertising agency founded by Stanford MBA Liz Castells-Heard.

For 25+ years, Fortune 500 brands have trusted INFUSION to turn cultural fluency into consistent business growth by infusing it across strategy, analytics, operations, AI, and the marketing 5Ps.

Today, INFUSION continues future-proofing brands with Liz's kinetic visionary leadership alongside Leticia Juarez's steady insightful command, and a strategically creative powerhouse team.

Analytics-first. AI-Powered. Creatively fearless. Designed for growth.

No BS Just Results

NO BS. JUST RESULTS.

Bring the fire.

THE FACTS: INDUSTRY LEADERS

WITH PROVEN IMPACT

AdAge — #17 Largest US Hispanic Agencies, #20 in Hispanic Media Agencies
HispanicAd.com — Top 10 Hispanic Agencies
MMR — Top 20 Multicultural Agency
AdAge — #17 Largest US Hispanic Agencies, #20 in Hispanic Media Agencies
HispanicAd.com — Top 10 Hispanic Agencies
MMR — Top 20 Multicultural Agency
THE CULTURAL
SHIFT

In the era of
Culturenomics,
Relevance is the
Growth multiplier.

The near-multicultural majority drives 100% of U.S. pop growth and outsized influence. For these audiences, culture codes their identity and daily lens, shaping values, behavior, expectations, how they think, connect, and evaluate brands, experiences and trust.

Yet over 85% of Multiculturals and two-thirds of all consumers still feel unseen in advertising —exposing a major relevance gap. Still brands that integrate cultural fluency outperform those relying only on data signals, translation, or surface representation.

INFUSION helps close the cultural fluency gap with the depth of knowledge, context, nuance, judgment, and lived experience required today.

TRANSCULTURATION™

SHOWS BRANDS HOW TO OPERATIONALIZE CULTURE AS A GROWTH SYSTEM PARTNER

Our proprietary model converts cultural fluency into business growth
by calibrating commonalities and differences, clarifying diverse audience needs, and identifying opportunity gaps to shape strategies that drive affinity, demand and sales across the ecosystem.

INFORM

We deconstruct cultural signals, behaviors, trends, category, and economic factors to reveal why, how, when, and where culture informs decisions and demand.

INFUSE

We identify universal, transcultural, and unique growth drivers and infuse them across strategy, planning, creative, media, and customer experience.

IGNITE

We activate culturally-fluent brand and performance ideas across the marketing 5Ps—turning insight into relevance, and igniting momentum and measurable growth.

WORK DESIGNED FOR CULTURE.
PROVEN IN MARKET.

Through Transculturation™, we clarify where audience strategies align or diverge to create ROI-Powered Ideas®
that move people, stick, sell, and scale at speed through our content engine, always on-brand and in collaboration.

Cultural authenticity requires nuance. We ground multicultural target-specific and in-language work in cultural truths, while balancing cultural specificity with universal appeal in mainstream work to maximize relevance and reach.

Our work with Spectrum, Toyota, McDonald's and other top brands shows how cultural fluency transforms challenges into growth opportunities across highly competitive categories.

FEATURED CASE STUDIES

Across categories and business challenges, we cut through complexity with sharp strategy, creative fire, and unified solutions that elevate brand value and drive growth.

Our clients' success is our success.

Spectrum Logo McDonald's Logo Toyota Logo Time Warner Cable Logo Nestle Logo First 5 California Logo Health Net Logo Safeway Logo Dole Logo Sempra Energy Logo Spectrum Logo McDonald's Logo Toyota Logo Time Warner Cable Logo Nestle Logo First 5 California Logo Health Net Logo Safeway Logo Dole Logo Sempra Energy Logo

CLIENTS CONFIRM THE POWER
OF CULTURAL FLUENCY.

IDEAS PERFORM BECAUSE
THE SYSTEM WORKS AS ONE.

Growth requires connected solutions built around real customers. We unify data, insight, strategy, creative, media, CX, production and experiences into one integrated system that adapts across audiences, markets, and languages. We tailor ideas to target context, affinities and behavior and align owned, earned, and paid ecosystems to drive measurable growth.

HOW WE DO IT
FIVE INTEGRATED
CAPABILITY PILLARS

STRATEGY &
INTELLIGENCE

Data-driven analytics, cultural insight, and business rigor inform smarter decisions and advantage.

CREATIVE &
CONTENT

ROI-Powered Ideas® built to resonate, perform, and scale across channels and platforms through agile production.

MEDIA &
PERFORMANCE

Omnichannel systems connecting brand and performance for efficiency and national to local impact.

EXPERIENCE &
INFLUENCE

Cultural engagement, experiences and influential voices that inspire participation and advocacy.

INNOVATION &
MULTICULTURAL

Future-ready solutions designed to engage diverse audiences, leverage new tech, and capture growth opportunities.

THE
TEAM

THE
PEOPLE

Broadcast Production Team
Soccer Pitch Filming Crew

CULTURAL GROWTH PARTNERS
WHO CONNECT DISCIPLINES

An energetic, hands-on transcultural team informed by multicultural, general market, and client-side expertise, infused with diverse origins and perspectives, strategic rigor, candor, brains, heart, and grit to ignite work that always performs on strategy, on brand, and on time.

No egos. No barriers. No BS. Just results.

LEADERSHIP THAT
MOVES CULTURE
AND BUSINESS
FORWARD

Our thought leadership helps brands
compete in today's multicultural
economy.

From frameworks and models to
perspectives, we shape sharper
strategy, deeper relevance, and
stronger measurable growth to
earn 100+ industry honors.

Four Real Stories. One Exceptional Team. 18 Telly Awards.
New!
Featured in Awards & Recognition
Four Real Stories.
One Exceptional Team.
18 Telly Awards.

18 Telly Awards. Countless moments that created connection.

Read the full publication
The cultural visionary elevating brands and business growth
New!
Featured in artbodegamagazine.com
The cultural visionary elevating brands and business growth

"I've always been this mix of numbers, intuition, creativity, and corazĂłn," she says. "Analytics is my lifeblood, strategy my superpower, but my heart is the compass."

Read the full publication
Liz Castells-Heard Has Been Saying It All Along. Are You Listening Yet?
Featured in hispanicexecutive.com
Liz Castells-Heard Has Been Saying It All Along. Are You Listening Yet?

How Liz Castells-Heard and INFUSION by Castells energize brands through transculturation to reach diverse consumers — and yes, that means everyone.

Read the full publication