I Tested Every Lip Balm at the Supermarket — Here's What I Found (And What It's Doing to Your Hormones)
By Lucía | @wellnessbylu
I went to my local supermarket with one mission: scan every lip balm on the shelf using the Yuca app and find out which ones are actually safe to use. What I found confirmed everything I talk about when it comes to hidden toxic load and why so many women are stuck in a cycle of hormonal chaos, fatigue, and chronic symptoms they cannot explain.
Because here is the thing. We do not just wear lip balm. We eat it. We reapply it all day long, and it absorbs directly through the skin on our lips — one of the most permeable areas of the face — going straight into the bloodstream. Your liver then has to identify, process, and eliminate every single compound in that product. Every single day.
This is not about fear. This is about information. Once you know, you can choose differently.
So let us get into it.
Watch me scan them live on Instagram → [click here]"
Why Your Lip Balm Matters More Than You Think
Before we break down each product, I want you to understand why lip balm matters in the context of hormonal health and liver function.
Your liver is your body's master detox organ. It processes everything — hormones, medications, food byproducts, environmental toxins, and yes, the synthetic chemicals in your beauty products. When the liver is constantly overloaded with compounds it has to neutralise, it has less capacity to do what keeps you feeling well: metabolising oestrogen properly, regulating blood sugar, supporting gut lining integrity, and keeping inflammation in check.
This is what I call your toxic load — the cumulative burden of all the chemicals your body is processing at any given time. Lip balm alone will not make you sick. But lip balm, plus your moisturiser, plus your perfume, plus your cleaning products, plus food packaging, plus environmental exposure — all of it adds up. And for women who are already dealing with SIBO, leaky gut, autoimmune conditions, or hormonal imbalances, reducing that load is one of the most powerful things you can do.
Now let us look at what is actually in the products most of us have been using for years.
The Ones That Failed
Carmex Moisturising Lip Balm Strawberry — 0/100 ❌
Zero out of one hundred. This is the worst score you can get on Yuca, and Carmex earned every bit of it.
Octinoxate (Octyl methoxycinnamate) — A UV filter classified as a high-risk endocrine disruptor. Studies have shown it mimics oestrogen in the body, interfering with the hormonal signalling that regulates your menstrual cycle, thyroid function, and metabolism. It is absorbed through the skin rapidly and has been detected in human blood, urine, and breast milk.
Benzophenone-3 (Oxybenzone) — Another UV filter and one of the most studied endocrine disruptors in cosmetics. It interferes with oestrogen, progesterone, and androgen receptors. It accumulates in fatty tissue and is extremely difficult for the liver to clear efficiently when exposure is chronic — which daily lip balm use absolutely is.
BHT (Butylated Hydroxytoluene) — A synthetic preservative linked to endocrine disruption and liver stress. Some research suggests it may interfere with thyroid hormone activity.
Petrolatum — A petroleum derivative. When not fully refined, petrolatum can be contaminated with polycyclic aromatic hydrocarbons (PAHs), classified as possible carcinogens. It also creates an occlusive barrier that can trap toxins against the skin.
Vaseline Lip Therapy Queen Bee — 2/100 ❌
BHT — High-risk endocrine disruptor and liver stressor.
Petrolatum — The base of this entire product is petroleum jelly. The same concerns apply as above.
Phenoxyethanol — A preservative often marketed as a "safer" alternative to parabens. At repeated daily exposure levels on the lips, it is associated with skin sensitisation, nervous system effects, and hormonal disruption.
Vaseline has been marketed as gentle for decades. But it is essentially petroleum jelly with synthetic preservatives — and your liver does not consider that gentle.
Dermal Therapy Tinted Lip Balm Rose Pink — 9/100 ❌
Petrolatum — Same concerns as above.
Polybutene — A synthetic polymer linked to moderate hormonal disruption concerns and skin penetration enhancement, meaning it may increase the absorption of other ingredients alongside it.
Benzyl salicylate — A fragrance compound with moderate-risk hormonal concerns.
Fragrance — One word that legally hides potentially thousands of undisclosed chemicals, many of which are known allergens, hormone disruptors, or liver stressors. Finding "fragrance" on a lip product — something you ingest throughout the day — is a significant red flag.
ChapStick Conditioner Lip Balm — 14/100 ❌
Octinoxate — High-risk endocrine disruptor, same as Carmex. It is striking that this ingredient appears in two of the most well-known lip balm brands on the market. Octinoxate is cheap, effective as a UV filter, and widely used — but its hormonal effects are well-documented and undeniable.
One of the most recognisable lip balm brands in the world, and yet it contains one of the most problematic UV filters in cosmetics.
Blistex Ultra Lip Balm — 34/100 ❌
Homosalate — A UV filter with moderate-risk hormonal disruption concerns. Research has also shown it can enhance the skin's absorption of other chemicals — meaning it may make the other synthetic ingredients in the formula more bioavailable, compounding the burden on your liver.
Ethylhexyl salicylate — Another chemical UV filter with similar hormone-disrupting concerns.
Phenoxyethanol — As above, moderate-risk preservative with systemic effects at repeated exposure levels.
Blistex scored better than the others but a score of 34/100 still means most of its formula raises concerns. Not acceptable for a product used directly on the lips multiple times a day.
The Ones That Passed
Burt's Bees Beeswax Lip Balm — 90/100 ✅
Burt's Bees uses a base of natural waxes and plant oils rather than petroleum derivatives. The formula contains no high-risk ingredients. Yuca flagged several ingredients as low-risk — including Mentha Piperita Oil (peppermint), Lanolin, Limonene, Linalool, and Eugenol — but these are naturally-derived compounds present in small amounts, not synthetic endocrine disruptors.
No mineral oils. No high-risk UV filters. No BHT or parabens. A genuinely clean formula that your liver can handle without working overtime.
Nivea Repair & Protection SPF 15 — 90/100 ✅
This one surprised me because most SPF lip balms are full of chemical UV filters. But Nivea's Repair & Protection formula is different — only one ingredient (Butyl methoxydibenzoylmethane) was flagged as low-risk. The rest is risk-free.
Standout ingredients: Ricinus communis seed oil (castor oil), Helianthus annuus seed wax (sunflower), Hydrogenated Rapeseed Oil, Butyrospermum parkii butter (shea butter), Panthenol (pro-vitamin B5). Nourishing, skin-supportive, and no known hormonal or liver burden. A genuinely clean SPF option, which is hard to find.
Nivea Original Care — 100/100 👑
A perfect score. Every single ingredient is risk-free.
The formula is beautifully simple: Helianthus annuus oil (sunflower seed oil), Cera alba (beeswax), Hydrogenated Rapeseed Oil, Butyrospermum parkii butter (shea butter), Tocopherols (Vitamin E), Ascorbyl palmitate (Vitamin C), Lecithin.
Natural, nourishing, and completely clean. This is what thoughtful formulation looks like — ingredients your body recognises and can work with, with nothing it has to fight against.
How Endocrine Disruptors Affect Your Hormones
This is the section I really want you to read carefully, because this is where the ingredient list becomes personal.
Endocrine disruptors are chemicals that interfere with your body's hormonal signalling system — the endocrine system. They do this in several ways: by mimicking your natural hormones, by blocking hormone receptors, or by interfering with the way your body produces, transports, and breaks down hormones. The result is a cascade of disruption that can affect virtually every system in your body.
Here is what that looks like across the four main hormonal areas affected:
Oestrogen Dominance
Several ingredients found in the failed products above — Octinoxate, Benzophenone-3, and BHT — are classified as xenoestrogens. Xenoestrogens are synthetic chemicals that mimic oestrogen in the body. They bind to oestrogen receptors and activate them, even though they are not your own oestrogen.
The problem is that your liver is responsible for clearing excess oestrogen from your body. When it is simultaneously trying to process xenoestrogens from your beauty products, food, plastics, and environment, it simply cannot keep up. The result is a build-up of oestrogenic activity in the body — what we call oestrogen dominance.
Oestrogen dominance does not necessarily mean your oestrogen is high on a blood test. It means the ratio of oestrogen to progesterone is out of balance. Symptoms include heavy or painful periods, PMS, breast tenderness, bloating, weight gain around the hips and thighs, mood swings, and difficulty losing weight no matter what you do.
Sound familiar? This is one of the most common patterns I see in the women I work with — and one of the first things I address when we look at reducing toxic load.
Thyroid Disruption
Your thyroid is extraordinarily sensitive to chemical interference. Several ingredients flagged in these products — including Octinoxate, Benzophenone-3, and BHT — have been shown in research to affect thyroid hormone synthesis, transport, and receptor binding.
The thyroid regulates your metabolism, body temperature, energy production, mood, hair growth, and gut motility. When it is disrupted by environmental chemicals — even at low doses over repeated exposure — the effects can be widespread and deeply frustrating, especially because they often do not show up clearly on standard thyroid panels.
Subclinical thyroid disruption can look like: fatigue that does not improve with rest, cold hands and feet, hair thinning, constipation, brain fog, slow metabolism, and low mood. These are symptoms that are often dismissed, but they are real — and reducing your exposure to thyroid-disrupting chemicals is a meaningful part of addressing them.
Progesterone Imbalance
Progesterone is your calming, balancing hormone. It counteracts oestrogen, supports sleep, reduces anxiety, and is essential for a healthy luteal phase and fertility. It is also one of the first hormones to suffer when the body is under chronic stress — including the biochemical stress of processing synthetic chemicals.
When xenoestrogens displace your natural oestrogen and occupy oestrogen receptors, your body's oestrogen-to-progesterone ratio shifts — and progesterone effectively becomes relatively low even if your levels are technically "normal." The liver plays a crucial role here: it is responsible for converting and clearing both oestrogen and its metabolites. When the liver is burdened, this clearance slows down, and the hormonal imbalance deepens.
Low progesterone or oestrogen dominance shows up as anxiety, sleep disruption, irregular cycles, spotting before your period, short luteal phases, and difficulty conceiving.
Cortisol and Adrenal Impact
This is the one people least expect. Your adrenal glands — the glands that produce cortisol, your primary stress hormone — are also part of the endocrine system, and they are vulnerable to the same chemical interference.
Several UV filters and synthetic preservatives have been shown to affect cortisol metabolism and adrenal receptor signalling. But perhaps more importantly, the chronic low-grade burden of processing endocrine-disrupting chemicals creates physiological stress — and physiological stress means cortisol output. Over time, this contributes to the pattern of dysregulated cortisol that underlies so much of what my clients experience: wired but tired, unable to sleep, crashing in the afternoon, relying on caffeine to function.
Your adrenals cannot distinguish between psychological stress and biochemical stress. Both demand the same cortisol response. Reducing your toxic load is, in a very real sense, reducing the demand on your adrenal glands.
What to Look For When You Buy Lip Balm
Here is a simple checklist you can use the next time you are standing in the beauty aisle:
Ingredients to avoid — especially in lip products:
Octinoxate / Octyl methoxycinnamate
Benzophenone-3 / Oxybenzone
BHT (Butylated Hydroxytoluene)
Petrolatum (unless certified fully refined)
Homosalate
Ethylhexyl salicylate
Phenoxyethanol
Fragrance / Parfum
What a clean lip balm looks like:
Plant-based waxes — beeswax (Cera alba), candelilla, carnauba
Natural oils — sunflower, castor, jojoba, coconut
Butters — shea (Butyrospermum parkii), cocoa
Tocopherols (Vitamin E)
Short ingredient lists with names you can mostly recognise
Use the Yuca app — it does the hard work for you. Scan before you buy and aim for a score of 75 or above on any lip product.
The Bigger Picture
I am not sharing this to overwhelm you or make you feel like everything is dangerous. I am sharing it because I was you — sick, exhausted, doing everything "right," and still not getting better. And nobody told me to look at the products I was putting on my body every single day.
Small, consistent swaps are what create lasting change. Switching your lip balm takes thirty seconds and costs nothing extra. But over months and years of daily use, that swap means thousands of fewer exposures to chemicals your liver has to process, your hormones have to compete with, and your immune system has to tolerate.
That is real. That matters. And it is completely within your control.
This is what holistic health looks like in practice — not a protocol, not a supplement stack, just paying attention to what goes in and on your body, one choice at a time.
Follow @wellnessbylu on Instagram for more content on liver health, hormone balance, and real-life clean living.
Ready to go deeper? I put together a free detox guide covering the foundational steps I use with my clients to reduce toxic load and support the liver. You can grab it here.