Lip Care — A Close Look at Lip Balm Ingredients

The anatomy of lip skin — why are lips so unique?

The skin of the lips (the so-called vermilion border) is fundamentally different from the skin on the rest of the body. It is 3–5 times thinner than facial skin, has no sebaceous or sweat glands, and contains minimal melanin — hence their characteristic red colour, which comes from the blood vessels showing through.

These anatomical features mean that the lips:

• Produce no natural sebum to protect against water loss.
• Lack a stratum corneum of typical thickness — the protective barrier is far weaker.
• Do not produce enough melanin to protect against UV.
• Are constantly exposed to saliva, food and the elements.

All of this means the lips need continuous occlusive protection — sealing moisture in, rather than supplying it from the outside.

The three pillars of an effective lip balm

1. Occlusive ingredients — sealing in moisture

Occlusion is the absolute foundation of lip care. Occlusive ingredients form a thin protective layer on the surface of the lips that prevents transepidermal water loss (TEWL). Among the most effective are:

• Petrolatum — the gold standard of occlusion, reducing TEWL by up to 98%. Safe and non-allergenic.
• Lanolin — excellent occlusive and emollient properties, although it can cause contact allergy in a small percentage of people.
• Beeswax (Cera Alba) — forms a breathable protective layer and gives balms a pleasant texture.
• Shea butter (Butyrospermum Parkii Butter) — combines occlusion with nourishment, rich in fatty acids.

2. Humectants — attracting moisture

Humectants draw water from the deeper layers of the skin and from the surrounding air. In lip balms, the ones you'll most often find are:

• Hyaluronic acid — binds water, hydrating the surface of the lips.
• Glycerin — one of the most effective and most affordable humectants.
• Honey — a natural humectant with additional antibacterial properties.

Note: humectants without occlusion can paradoxically make dryness worse — water drawn to the surface simply evaporates if it isn't sealed in by an occlusive layer. That's why the best balms combine both types of ingredients.

3. Emollients — smoothing and softening

Emollients fill the gaps between the cells of the epidermis, smoothing the surface of the lips. They include ceramides, squalane and plant oils (jojoba, almond, coconut). Check the formulas of lip balms in our product search.

Ingredients best avoided

Some ingredients found in popular balms can irritate the delicate skin of the lips or create a dependency effect (constant licking and drying out):

• Menthol and camphor — they deliver a cooling sensation, but can irritate and worsen dryness.
• Salicylic acid in high concentrations — exfoliates the already thin lip barrier.
• Artificial dyes and fragrances — common contact allergens.
• Alcohol (Alcohol Denat.) — dries out and damages the protective barrier.

You can learn more about potentially irritating ingredients in our cosmetic ingredient database.

Lip exfoliation — does it make sense?

Gentle lip exfoliation can help remove dead skin cells and improve the absorption of active ingredients, but moderation is essential. Lip skin is naturally very thin, so aggressive exfoliation is contraindicated.

Rules for safe lip exfoliation:

• Do it no more than 1–2 times a week.
• Choose fine-grained scrubs (e.g. sugar-based) or enzymatic formulas.
• Apply a rich occlusive balm immediately after exfoliating.
• Never peel off flakes of dry skin — this leads to micro-wounds and infection.

UV protection — often overlooked

The lips are particularly vulnerable to sun damage because they lack melanin. Prolonged UV exposure can lead to actinic cheilitis, which is a precancerous condition. Look for balms with an SPF 15–30 filter, especially in summer and in the mountains.

When do dry lips call for a specialist?

Chronically cracked, painful or bleeding lips despite proper care may point to health issues: vitamin deficiencies (B2, B12, iron), contact allergy, angular cheilitis or a fungal infection. In such cases, consult a dermatologist or your primary care doctor.