What the Ingredient List Is Actually Telling You

A practical guide to reading children's skincare labels and why the gap between what's listed and what works is where most products fall apart.

8 min read Founders Investors Product Leaders R&D Professionals

Last week I wrote about the skin barrier: what it is, why it fails in children with eczema, and why most products treat it as a surface problem when it is a structural one. If you haven't read it, the short version is this: dry, a child's eczema-prone skin isn't just dehydrated. It has a compromised lipid matrix within the barrier that needs specific ingredients at functional concentrations to support barrier repair. Several products simply do not deliver this and most parents do not know to look for it.

Understanding this level of the biology is only useful if you can translate it to the product in your hand.

The translation: reading (and understanding) the ingredient list.

The truth: most of us were never taught how to read one.

Cosmetic ingredients in most markets — the EU, UK, US, Australia — are required to be listed using the standardized INCI (International Nomenclature of Cosmetic Ingredients) naming system. This is actually useful, once you know how it works.

The first important rule of the ingredient list is this: ingredients are listed in descending order of concentration, from highest to lowest. The first ingredient is present in the largest amount. The last ingredient is present in the smallest. This is the most functionally useful piece of information on the entire label.

A skincare product can legally claim to contain a beneficial ingredient even if it is listed at position 21 of 22 ingredients total. At that concentration, it may certainly be below the threshold at which it could have any meaningful effect on the skin. In industry shorthand, that makes this a marketing ingredient. It earns a place on the front of the pack without doing any transformative work inside the formula. This is not illegal. It is not even unusual. It is standard practice in a market where claims are largely unregulated and consumers have limited tools to interrogate them.

The guidelines are clear: for children with eczema or very sensitive skin, choose products with no added fragrance. It is important to discuss that “unscented” is not the same thing as "fragrance-free". An unscented product may still contain fragrance ingredients used to mask odor. The American Academy of Dermatology specifically advises choosing fragrance-free rather than unscented products, and pediatric guidance also recommends avoiding added fragrance, dyes, and essential oils because they can act as irritants or contact allergens.

That means parents should scan not just for the words “fragrance,” “parfum,” or “aroma,” but also for essential oils. Also remember that plant-derived does not automatically mean gentler.

While the ingredient list tells you what is in a product, there is nothing to directly tell you the pH at which that product was formulated. This matters more than most parents realize.

The skin's natural surface pH is mildly acidic (approximately 4.5 to 5.5 in healthy adults, and somewhat higher in infants and young children). This acidity is not incidental. In fact, it has a name: The skin's acid mantle activates antimicrobial peptides that protect against pathogens. Skin affected by eczema tends to lose some of its normal acidity, and acidic cleansers are generally preferred for eczema-prone skin. The problem is that most products do not disclose pH, so parents cannot easily use it as a shopping tool.

That makes pH a useful secondary consideration, but not the first thing most families should focus on. In practice, guideline-based basics matter more: short lukewarm baths, a gentle cleanser if needed, and a thick fragrance-free moisturizer applied within three minutes afterward.

One of the most misleading shortcuts in children’s skincare is the automatic assumption that “natural” means safer. It does not. Some naturally derived ingredients can irritate or sensitize skin. Meanwhile, some of the better-tolerated ingredients are synthetic. For children with eczema-prone skin, the more useful question is not whether something came from a plant versus a lab. It is whether the product is gentle, fragrance-free, and usable day after day without provoking irritation.

Ingredient order can still be helpful. If water is listed first, that usually means the formula is largely water-based. That is not automatically a problem. Many good creams begin that way. What matters more for families is the overall type of product and whether it supports daily barrier care.

This is where pediatric guidance is more practical than marketing language: thick creams and ointments are generally preferred over lotions for eczema-prone skin, and the best moisturizer is one your child tolerates and will actually use consistently. In other words, ingredient order can offer clues, but it is not a complete test of whether a product is “good” or “bad.”

Honestly, most parents do not have time to cross-reference every ingredient against a dermatology database in the pharmacy aisle. Many of us only have time for a quick scan between meltdowns or siblings bickering before we have to make a selection. For that reason, below you will find a practical guide to help find important information quickly.

If you are choosing a product for a child with dry, sensitive, or eczema-prone skin, ask these questions first:

These questions will not tell you everything. But they will, reliably, help you distinguish between a product built around a formula and a product built around a label.

The real gap is not that parents are incapable of understanding skincare. It is that the market often rewards shorthand: natural, gentle, soothing, clean. Pediatric dermatology guidelines reward something else: fewer irritants, more consistency, better barrier support, and treatment when treatment is needed. When parents know those priorities, labels become less persuasive and more useful.

For Founders and Investors: This is not just a consumer education gap. It is a market design gap. Right now, many products compete on branding proxies that do not map cleanly to clinical outcomes. That creates short-term differentiation but long-term fragility.

As more parents become better at asking the right questions, capital will increasingly follow products that can answer them.

For Formulators: There is nothing new about the underlying science. Barrier repair, irritation avoidance, and consistency of use have been the core principles for years. The gap is in how often these principles are diluted by positioning or aesthetic choices. A few practical anchors:

For Brand Builders: The fastest way to lose trust in this category is to rely on signals that informed parents are starting to question: “natural,” “gentle,” “clean,” “dermatologist tested.” These are not wrong, but they are no longer sufficient. The brands that will differentiate are the ones that:

The parent's clarity is becoming a competitive advantage.

I built P2 & You Children's Skincare because my child had eczema and I wanted a gentler approach to soothe his skin without compromise. What started as a personal frustration became a professional obsession and eventually a business.

But I also talk about it publicly - on LinkedIn, in our newsletter, in every piece of content we create - because the gap between what the science says and what most parents know is, itself, the problem. A parent who understands the skin barrier makes better purchasing decisions. A better-informed market creates better incentives for formulators. Better formulations mean fewer uncomfortable children.

That's the supply chain gap we're trying to fix. Not just the one on our shelves, but the one between science and what parents actually understand.

The gap between what the science says and what most parents can understand isn't just a knowledge problem. It's a market design problem. As long as the tools for evaluating a product remain opaque or ambiguous - locked inside formulation science, available only to professionals - the default purchasing signal will be packaging, price and positioning. Brands that benefit from that opacity have no incentive to change it.

The goal of this newsletter is not to make every parent a scientist. It is to give them enough of the right questions that the market has to answer them.

The shift from consumer to informed buyer is the most efficient pressure point available.

© 2026 Taylor C. Liddell. All rights reserved. P2 & You Children's Skincare.

Brooks, S. G., Mahmoud, R. H., Lin, R. R., Fluhr, J. W., & Yosipovitch, G. (2024). The Skin Acid Mantle: An update on skin pH. Journal of Investigative Dermatology, 145(3), 509–521. https://doi.org/10.1016/j.jid.2024.07.009

Choi E. H. (2025). Skin Barrier Function in Neonates and Infants. Allergy, asthma & immunology research, 17(1), 32–46. https://doi.org/10.4168/aair.2025.17.1.32

PH labelling of skin cleansers can lead to better options. (n.d.). https://www.aaaai.org/about/news/news/2024/cleansers

Schoch, J. J., Anderson, K. R., Jones, A. E., Tollefson, M. M., Dermatology, S. O., Wright, T., Hunt, R., Lauren, C., Boull, C., Gupta, D., & Kenner-Bell, B. (2025b). Atopic Dermatitis: Update on Skin-Directed Management: Clinical Report. PEDIATRICS, 155(6). https://doi.org/10.1542/peds.2025-071812