How to Develop a K-Beauty Lip Treatment: Format, Actives, Tint, SPF

Lip treatments look like the easy SKU. A small jar, some waxes and oils, a pretty tint. Then the balm turns grainy after a warm week in transit. A shade gets flagged for a pigment the US does not allow on lips. One line of label copy turns a cosmetic into a drug.

Demand is not the hard part. Amorepacific says its Laneige Berry Lip Sleeping Mask was the top seller in Beauty & Personal Care during Amazon Prime Day 2022 (Amorepacific). In 2025, e.l.f. Beauty agreed to acquire Rhode (e.l.f. Beauty), a brand that launched with a peptide lip treatment among its first products (Fortune).

A lip treatment is a leave-on lip product made for comfort and condition rather than color: softness, shine and moisture, sometimes with a sheer tint. This protocol walks through the seven decisions that shape one, in roughly the order a Korean ODM lab will ask about them.

What Should You Decide Before Briefing a Korean Lab?

Decide three things before the first brief: where you will sell, what the label will claim, and whether the product is tinted. Those answers set the ingredient list a lab can offer, the colors it can use, and whether your product stays a cosmetic in the US.

Market comes first because rules differ by country. A shade that sells in Seoul can contain a color the US does not permit on lips. A claim that reads as cosmetic in one market can read as a drug claim in another. If the US is your launch market, brief the lab to US rules on day one instead of adapting a Korean SKU later.

Here is the protocol at a glance:

1. Set the rules: launch markets, claim words, tinted or clear.
2. Pick the format and the applicator.
3. Build the base for that format.
4. Choose one or two actives you can describe honestly.
5. Clear every color for lip use.
6. Hold the drug line: keep the label cosmetic, or plan for an OTC drug.
7. Test heat, packaging and real use, then lock the spec.

Choose the Format First: Jar, Tube, Wand or Stick

The format is the first technical decision because it fixes the base, the package and the test plan. A jar mask, a tube balm, a wand oil and a stick are four different products, even with the same ingredient story.

Launch with one hero format. Each extra format adds a package, a test plan and often a different filling setup at the factory.

How Do You Build the Base and Pick Actives?

Build the base around the format, then add one or two actives you can explain in plain words. Lip bases fall into two broad systems: anhydrous blends of waxes, butters and oils, and emulsions that can carry water-loving ingredients such as glycerin or hyaluronic acid.

Anhydrous refers to a formula made without added water, and it changes your preservation plan. ISO 29621 lets a lab document, through a risk assessment, that a product is microbiologically low risk (ISO 29621), and a water-free balm can qualify. A water-based jar mask is the kind of product the preservation efficacy test in ISO 11930 was written for (ISO 11930).

Waxes deserve more attention than they get. They set firmness, glide and heat resistance, and they are not drop-in swaps. A 2022 study from Chanel's R&D group tested plant-based waxes as substitutes for a synthetic wax in lipstick. None could replace it weight for weight, and full substitution brought back problems such as sweating (OCL, 2022). If your brief says "natural waxes only," budget for extra lab rounds.

For actives, peptides, ceramides and plant oils are familiar choices in lip care, and they read well on a label as long as the claim stays cosmetic. If you want a K-beauty signature ingredient, choose one with a sourcing story you can document, the way you would for a face serum. Our heartleaf (Houttuynia cordata) K-beauty ingredient sourcing guide shows what that file looks like.

Two ingredients need an early decision. Lanolin is a classic balm base, and the American Contact Dermatitis Society named it the 2023 Allergen of the Year (MDedge). Flavor is the other. US labels can list it simply as "flavor" (21 CFR 701.3). MoCRA, however, requires FDA to set fragrance allergen labeling rules (FDA), so keep your flavor supplier's allergen statement on file.

Every Tint Color Must Be Cleared for Lips

In the US, color additives are approved by use, and lips count as their own use. FDA defines externally applied cosmetics as products applied to external parts of the body, not to the lips or any surface covered by mucous membrane (21 CFR 70.3). A color listed only for external use therefore cannot go into a lip product.

Ultramarines are the classic trap. These blues and violets are permitted in externally applied cosmetics, including eye products, but not on lips (21 CFR 73.2725). FDA's 2015 warning letter to Lime Crime over a liquid lipstick cited ultramarines and ferric ferrocyanide (Cosmetics Business).

FDA's quick-reference table shows, for each color, whether it is permitted around the eyes, "generally (includes lipsticks)," or for external use only (FDA color additive table). Colors with the "Ext. D&C" prefix sit in the external-only column, a few certified reds and oranges carry lipstick-specific limits, and certified colors also need FDA batch certification (FDA fact sheet).

The working rule: ask the lab for the full colorant list of every shade, with each color's US listing, before you approve a swatch. A shade that looks perfect in Seoul may need a pigment swap for the US, and a swap changes the color, so re-approve the shade after any change.

When Does a Lip Balm Become an OTC Drug?

A lip balm becomes an OTC drug in the US when its label promises sun protection, or promises to protect or relieve chapped or cracked lips. FDA treats moisturizers and makeup marketed with sun-protection claims as both cosmetics and drugs (FDA). The phrase "temporarily protects chapped or cracked lips" is indication language from the OTC skin protectant monograph (21 CFR 347.50).

The same monograph lists familiar balm ingredients, including petrolatum, dimethicone, lanolin, cocoa butter and allantoin, as skin protectant actives within set ranges (21 CFR 347.10). FDA now manages these rules as OTC Monograph M016 (FDA). Using these ingredients does not by itself make a balm a drug. Intended use decides, and FDA looks at labels, ads, websites and other promotion to judge it.

Cosmetic wording describes appearance and feel: moisturizes, softens, smooths, adds shine. Drug wording describes protecting, relieving, healing or preventing. If you want SPF, plan for drug labeling, a US-permitted sunscreen active and the testing that comes with it. Our guide to Korean sunscreen and the FDA OTC monograph walks through that path.

Common mistakes at this step:

• Copying Korean label claims into US copy without a claims review.
• Adding SPF to a launch SKU after the packaging artwork is final.
• Approving a tinted shade without its colorant list.
• Writing "repairs" or "heals" in captions and ads after a clean label review.

Test for Heat, Packaging and Real Use Before the PO

Lip products fail in pockets, cars and delivery trucks, so the test plan starts with temperature. Ask for heat and freeze-thaw cycling on the final formula in the final package. Add checks for sweating (oil beading on the surface), blooming (a whitish or grainy film) and color drift.

Next, test the package with the product inside: tube flow when cold and warm, wand leakage and wiper fit, stick breakage at full twist-up. A jar mask needs an in-use check with its spatula, and anything containing water needs preservation testing. Our guide to reading Korean stability test reports covers what the lab's results should show, and the Korean packaging guide for tubes, droppers and jars compares components.

Last, line up the US paperwork. MoCRA requires product listing with ingredients and records that support each product's safety (FDA MoCRA overview). Your safety assessment should also treat the product as a lip product, since some of it is swallowed during wear. Our FDA requirements guide for Korean skincare imports covers the registration and listing steps.

Frequently Asked Questions

Can I sell a Korean lip tint in the US as it is?
Only if every color in it is permitted for lip use in the US and the label meets US rules. Ask for the colorant list and check each color against FDA's table. Colors limited to external use, such as ultramarines, cannot be used on lips.

Is a lip sleeping mask a cosmetic or a drug?
A lip sleeping mask is a cosmetic when it claims to moisturize, soften or smooth. It becomes an OTC drug if it claims SPF, or claims to protect or relieve chapped or cracked lips, which is monograph language.

Do water-free lip balms need a preservative?
Sometimes not. ISO 29621 lets a lab document through a risk assessment that a product is microbiologically low risk, and a water-free balm can qualify. A water-based jar mask needs preservation efficacy testing under ISO 11930.

Does every lip shade need its own MoCRA product listing?
Not necessarily. Under MoCRA, one listing can cover products whose formulas differ only in color, fragrance or flavor, or fill size (BCLP). The listing still has to name the ingredients, including the colors.

By Liz Song, K-beauty sourcing consultant.