Tinted lip balm: how much pigment a tube can carry, and how to disperse it

A tinted lip balm in weight percent with 3 to 8 percent pigment, castor dispersion, three shade depths, tube pour temperature and the cure that stops streaks.

A tinted balm fails differently from a clear one. A clear balm that is slightly wrong feels wrong; a tinted balm that is slightly wrong looks wrong, and the reader sees it before they feel it. This page gives a base built to carry pigment, three shade depths that all total 100, the pre-dispersion step that decides whether the colour is even, and the pour and cure numbers that stop the stick going streaky in the tube.

• Pigment 3-8%
• Castor 22%
• 40% pre-dispersion
• Pour 68-74 C
• Cure 48 h

Pigment is a solid, and the balm has to carry it

Everything else in a lip balm melts. Pigment does not. Iron oxides and titanium dioxide stay solid through the melt, through the pour and through the life of the stick, so from the formula's point of view they are suspended grit that happens to be coloured. That single fact explains almost every tinted balm problem: the particles can clump, they can settle, they can abrade, and none of those things happen to an oil.

It also sets the ceiling. Below roughly 3% total pigment you are making a wash rather than a tint, and the colour disappears against natural lip pigmentation. Above roughly 8% the solids start to compete with the wax network for the same space: the stick gets stiff and matte, payoff drops rather than rises, and you have quietly crossed into natural lipstick territory, where a different base and a different container are the right answer. Three to eight percent is the working band for a twist-up balm that still behaves like a balm.

One definition matters before the numbers. "Pigment" here means the whole pigment package, titanium dioxide and mica included, because that is what the wax has to suspend. The colouring fraction, the iron oxide alone, runs from about 1.4% at the sheer depth to about 4% at the full depth, which is the ordinary iron oxide window.

Why the base is 14% wax, 20% butters and 22% castor

A clear tube balm runs comfortably at 15 to 16% beeswax. This base sits at 14 because pigment is itself a stiffener. Solid particles raise the viscosity of the molten phase and the hardness of the set stick, so 14% wax with 5.5% pigment reads on the lip much like 16% wax with none. Leave the wax at 16 and add pigment on top and the result is the crayon complaint: plenty of colour in the stick, very little of it on the lip.

Butters come down to 20%, split 8% cocoa and 12% shea, for the same reason. The 24 to 34% loads that suit a clear balm add solid fat to a formula that already carries solid pigment, and the combination goes chalky. Cocoa carries the wear, shea the cushion.

The number that looks strange is 22% castor oil, roughly double what a clear balm needs. It is there for two jobs at once. Castor is the wetting agent that makes dispersion possible, because ricinoleic acid carries a hydroxyl group that lets the oil wet a polar mineral surface and displace air, and because its viscosity transmits grinding shear into the agglomerates instead of flowing around them. It is also the gloss and cling that stops a pigmented film reading as dry. The 22% is chosen so that the dispersion carrier fits inside it at every shade depth: the deepest shade takes 12 of those 22 points into the pigment paste, leaving 10 to go into the melt on its own.

The formula

All figures are weight percent of the finished batch and total exactly 100. The version below is the medium shade at 5.5% pigment. A 100 g batch fills about twenty standard oval twist-up tubes at 4.5 g each once you allow 10% for what stays in the jug, the spatula and the pigment tile.

Flavour is deliberately absent, because adding pigment and flavour on the same first batch leaves you unable to tell which caused a fault. If you want it, take 0.5 points off the sunflower and stir it in below 60 C with the tocopherol, after the pigment is fully dispersed.

Three shade depths

Sheer, medium and full differ only in the pigment package and the sunflower oil, point for point. The wax, the butters, the total castor and the jojoba never move, which is what makes the three sticks comparable: any difference you feel is the pigment, not the base.

Titanium dioxide is the depth control that people misuse. It does not lighten the colour so much as make it opaque, turning a stain that lets lip colour through into a paint that covers it. Push it past about 2% and the stick starts to look pastel in the tube and chalky on the lip, and the film feels dry because a hard white mineral is doing work that oil should be doing. The mica adds sheen and almost no coverage; if you leave it out, take the points into the sunflower rather than into more iron oxide, or the shade jumps two steps darker.

Only lip-approved colour, and why mica is the trap

Colour additives are governed by positive lists rather than by general safety rules. A pigment is permitted for lip use because a regulator has listed it for lip use, and lips sit in the strictest band because part of the product is swallowed. In the United States the listings sit in 21 CFR Parts 73 and 74, and a great many entries are restricted to externally applied cosmetics, which excludes lips. In the EU and UK, Annex IV of Regulation 1223/2009 gives each colourant a field of application, and a lip balm contacts mucous membrane. The two lists are not identical, so a pigment can be legal in one market and prohibited in the other. Colourants and tints works through the detail, and the record you have to keep if you sell the result is part of labelling cosmetics in the US.

Iron oxides do the colouring here because they are opaque, lightfast, thermally stable well past any temperature a balm sees, and available across every earth tone. Titanium dioxide does the opacity. Both are covered in iron oxides and mineral pigments. Approved D&C reds reach brighter, bluer shades than minerals can, at the cost of lightfastness and with batch certification duties in the US. Carmine gives the classic blue-toned crimson and is not vegan.

The 40% pre-dispersion

Dry pigment does not arrive as particles. It arrives as agglomerates, clusters held together by surface forces with air trapped between them, and stirring powder into a molten balm neither breaks them apart nor keeps them apart. This is the step that separates a tinted balm that works from one that does not, and it happens before you melt anything.

1. Weigh the paste. Pigment and castor oil at 40% pigment by weight: for the medium shade at a 100 g batch, that is 5.50 g of pigment and 8.25 g of castor. Weigh the castor into a small dish, then add the pigment to it, not the other way round.
2. Wet it out. Stir until every particle is dark and glossy and there is no dry powder left at the edges. A properly wetted paste looks like thick ink. Dry pockets at this stage never disperse later.
3. Grind it. Work the paste against a glass tile with a stiff spatula, a glass muller or a pestle, folding it back on itself. Five minutes of real pressure, not thirty seconds of stirring. You are shearing agglomerates apart, and shear needs resistance.
4. Draw it down. Spread a thin film across the tile with the spatula edge and look across it in raking light. Streaks, specks and gritty lines mean it is not finished. A finished paste draws down as one even film.
5. Hold it warm. Stand the dish somewhere at 40 to 50 C while the wax phase melts, so the paste is not a cold lump when it meets a hot melt.

Melting, pouring and topping up

1. Melt phase A at 75 to 80 C. Beeswax, cocoa, shea, the balance of the castor, jojoba and sunflower in a jug in simmering water, held until the liquid is completely clear with no shea crystals. Do not run past 85 C.
2. Stir in the paste. Add the warm pigment paste to the clear melt and stir for a full minute, scraping the jug wall and the base. Rinse the dish with a spoonful of the melt and return it, or you leave 3% of your colour behind.
3. Cool below 60 C for the tocopherol. Off the heat, stirring continuously so nothing settles while it drops.
4. Bring back to 68 to 74 C and pour. Stir immediately before and, if you are filling more than a dozen tubes, between rows. Fill each tube in one movement to about 1 mm below the rim.
5. Top up after 8 to 12 minutes. Once the surface has skinned and dished, pour a thin second layer from a jug that is still warm and still stirred, so it fuses rather than sitting as a separate disc.
6. Cool upright, then cure 48 hours. Room temperature, uncapped until firm. Do not judge the colour before day two.

The pour band is 68 to 74 C rather than the 65 to 72 C a clear tube balm uses, and the reason is settling rather than surface finish. Suspended pigment falls through molten balm at a rate set by particle size and by the viscosity of the liquid around it, and viscosity climbs steeply as the melt cools toward the wax setting point. Pouring at the warmer end keeps the melt fluid enough to stay mixed while you work, at the cost of a slightly deeper shrinkage dip that the top-up fixes. Below 68 C the balm thickens unevenly around the pigment and the tops go lumpy; above about 76 C settling in the jug becomes fast enough to see. The general physics is in pour temperatures, and the tube handling in filling lip balm tubes.

Why the tubes at the end of a pour are darker

This is the fault that catches people who have made clear balm for years without trouble. Pour twenty tubes from one jug and the last five are visibly deeper than the first five, because pigment has been sinking through the melt for the four minutes the pour took. Nothing is wrong with the formula. The batch has simply stratified in the jug.

Three things fix it, and they compound. Pour at the top of the band, where the melt is least viscous. Stir between rows with a spatula that reaches the base of the jug, since the gradient is strongest in the bottom centimetre. And split anything over about thirty tubes into two jugs, keeping the second in the water bath. The mechanism, including what it does inside an individual tube, is in pigment sinking to the bottom.

The 48 hour cure, and the colour moving during it

Wax crystallisation continues for a day or two after a balm is visibly solid, and in a tinted stick that has an optical consequence as well as a mechanical one. As the crystal network finishes forming, the surface goes from the slightly glassy look of a fast-set melt to a finer, more scattering microtexture. Sticks poured on Monday typically read a shade deeper and less shiny on Wednesday. That is the true colour. Judging on the day you poured is how people end up adding pigment to a batch that did not need it, then finding the next one is too dark.

Colour that keeps darkening past 48 hours, or that develops a dull bloom, is a different problem: it is usually surface crystallisation of the cocoa butter or fat migration to the surface, not pigment. Colour that fades over weeks is not iron oxide, which does not fade, but an organic lake or a plant colourant, and the distinction is worked through in tinted balm colour fading.

Failure modes

Wear testing and staining

Swatch on the inside of a forearm and on a lip, in daylight, from a cured stick. The two differ, and the lip is the one that counts, because lip skin is already pigmented and translucent and it subtracts from whatever you put on it. This is also why the stick always looks darker than it applies: in the tube you are looking at several millimetres of pigment stacked up, and on the lip you are looking at a film of perhaps 20 to 30 microns over a red-brown background. A stick that looks exactly the shade you want in the tube will apply as a wash.

For wear, time it: how long the colour survives a cup of tea and a meal, and whether it leaves evenly or in patches. Iron oxide tints at these levels typically hold about an hour of ordinary talking and drinking, and the limit is the balm's own softness rather than the pigment. Staining, meaning colour that persists after the balm is wiped away, is a property of organic lakes rather than mineral pigment, so a stain-free iron oxide tint is normal. If you plan to sell it, run the comparison as a structured panel of several people against a numbered control, rather than by impression.

What this formula will not do

It will not give you an opaque, all-day lipstick finish. At 8% pigment in a 14% wax base you have reached the point where more colour costs you more than it buys: the stick stiffens, payoff falls, and a lipstick base with higher wax, higher pigment and a bullet mould does the job properly. It will not give you a bright pink, a coral or a true red without approved organic lakes, because iron oxides only reach earth reds, browns and warm terracottas. It will not protect anybody from the sun; titanium dioxide at 2% is doing colour work, and any sun protection claim moves the product into a different regulatory category entirely, as set out in SPF in lip balm.

The decision rule is simple. If the colour is uneven, fix the grinding. If the colour is weak but even, raise the iron oxide fraction inside the package and leave the total alone. If the colour is right and the feel is wrong, the base is the problem, not the pigment, and the clear formula it is built from is at how to make lip balm. Changing two of those at once on the same batch is how people spend a month on a shade.

Reviewed and updated 6 September 2026. Spotted an error? Tell us and we will fix and log it.