Navigating substantiation, transparency and consumer skepticism in a crowded marketplace

Functional ingredients are everywhere, promising better sleep, sharper focus, healthier guts and stronger immunity. But as the market has grown, so has consumer skepticism. Shoppers are more informed, more cautious and quicker to question claims that sound too good to be true.

In today’s crowded marketplace, trust is no longer built through bold claims alone. It’s built through science, substantiation and transparency. Brands that understand this shift will be far better positioned to win long-term loyalty.

The growing gap between science and marketing

The functional ingredient space sits at the intersection of nutrition, wellness, and science. While innovation has accelerated, marketing narratives often outpace the underlying evidence. This disconnect has consequences.

According to the U.S. Food and Drug Administration (FDA), companies are responsible for ensuring that claims about dietary ingredients are truthful and not misleading. Meanwhile, the Federal Trade Commission (FTC) requires that health-related claims be backed by competent and reliable scientific evidence. Yet many brands still rely on:

• Preliminary research
• Ingredient-level studies that do not match finished product dosages
• Broad claims extrapolated from narrow outcomes

However, many consumers are becoming aware of these shortcuts – and they are pushing back.

What “substantiation” really means

Scientific substantiation is not just about having a study. It is about having the right kind of evidence for the specific claim being made. At a minimum, strong substantiation should consider randomized or placebo-controlled human clinical trials, clinically relevant dosages that match the amount used in the product and clear endpoints that align with the consumer-facing claim. For example, a study showing that an ingredient affects a biomarker does not automatically support a claim about how someone will feel or function. Regulators and scientists draw these distinctions carefully – and brands should too.

Resources like PubMed and the European Food Safety Authority (EFSA) opinions database are valuable tools for assessing the strength and relevance of existing research.

Transparency as a competitive advantage

Transparency has moved from a “nice-to-have” to a core expectation. Consumers want to know not just what is in a product, but why it works – and how confident the brand is in that answer. As a result, leading brands are embracing transparency by clearly distinguishing between emerging science and well-established benefits. The key is to explain how an ingredient works without oversimplifying or exaggerating its affect, and to make study summaries or references easily accessible.

Organizations like the International Food Information Council (IFIC) have documented that transparency significantly improves consumer trust, even when the science is still evolving. Honesty about limitations does not weaken a brand, Rather, it strengthens credibility.

Avoiding the “hype cycle” trap

Functional ingredients often follow a predictable hype cycle. There is an initial period of early excitement, followed by rapid consumer adoption, aggressive claims and an eventual backlash against those claims. Brands that tie their identity too closely to hype risk reputational damage when scrutiny increases. On the other hand, sustainable brand build measured, defensible claims from the start and invest in ongoing research rather than one-time validation. This approach aligns with guidance from groups like the Council for Responsible Nutrition (CRN), which advocates for responsible communication grounded in science.

Reframing claims for today’s consumer

Modern consumers do not expect certainty. They do expect integrity. Claims framed around support, contribution or maintenance often resonate more than exaggerated promises – and they are much easier to substantiate. For example, the phrase “supports cognitive performance” is more accurate than suggesting an ingredient “boosts brain power.” Similarly, “helps maintain gut health” provides a more reasonable claim than “fixes digestion.” This language not only aligns better with regulatory expectations, but also signals respect for the consumer’s intelligence.

Trust is built over time, not headlines

In an era of heightened skepticism, trust is not built by saying more. It is built by saying less – better and more clearly. Brands that invest in rigorous science, communicate transparently and resist the pull of hype will stand out in a marketplace crowded with noise. The long-term winners in functional ingredients will not be the loudest voices. They will be the most credible ones.