Chlorophyll

Overview

Chlorophyll is the pigment that makes plants green — and in cosmetic formulation, it is one of the most reliable ways to get a true, vivid green without synthetic dyes. The cosmetic-grade version is typically a copper complex (chlorophyllin-copper complex, CI 75810), which is far more stable than raw chlorophyll extracted straight from leaves.

Two forms exist for DIY use: water-soluble chlorophyllin (usually sold as a dark green liquid) and oil-soluble chlorophyll (a thick, dark green oil or paste). The water-soluble version drops into toners, gels, and the water phase of emulsions. The oil-soluble version goes into lip balms, body oils, soap, and oil-phase formulations. Both are intensely concentrated — a single drop can color an entire batch.

The copper complex is what gives cosmetic chlorophyll its stability. Natural chlorophyll without the copper degrades rapidly in light and heat, turning olive-brown within weeks. The copper-stabilized version holds its green for months to years in finished products.

What it does in a formula

Chlorophyll is a colorant only at cosmetic usage rates. It delivers green tones ranging from fresh spring green (at very low concentration) to deep forest or emerald (at higher amounts). It does not provide functional benefits to skin at the tiny percentages used for coloring.

The water-soluble form integrates seamlessly into transparent gels, toners, and the water phase of emulsions. The oil-soluble form colors lip balms, salves, bath oils, and soap batters evenly. Both produce clean, true green without the muddiness common in other natural green options (like spirulina, which leans teal-blue, or matcha, which fades to olive quickly).

How to use

• Water-soluble chlorophyllin: Add drop by drop to your water phase. Start with 1 drop per 100g of product and increase until you reach desired shade. Typical range: 0.01-0.2%.
• Oil-soluble chlorophyll: Add to your oil phase or directly into melted butters/waxes. Same drop-by-drop approach. Range: 0.01-0.5%.
• Soap: Add oil-soluble form at trace, 0.1-0.3% of total batch weight.
• Lip balms: 0.01-0.05%. Very little needed — aim for tint, not opacity.
• Lotions/creams: Add water-soluble form to water phase before emulsification, or oil-soluble form to oil phase. 0.01-0.1%.
• Stable at pH 4-9, which covers nearly all cosmetic formulas.
• Store the raw ingredient away from light — even the copper complex degrades with prolonged UV exposure.

Best for / Worst for

Best for: soaps (produces stable green), lip balms, body oils, bath bombs, gels and toners, any formula where you want natural-looking green coloring, combining with yellow colorants (like annatto) for custom shades.

Worst for: products with extended direct sunlight exposure (will fade eventually), formulas below pH 3 or above pH 10 (color breaks down), situations where you need a non-copper-complex “clean” label (some consumers avoid the copper complex).

Common pitfalls

Using too much — Chlorophyll is extremely concentrated. One drop too many can turn your elegant pale-green lotion into an opaque dark sludge. Add drop by drop and mix fully before adding more.

Confusing the two forms — Oil-soluble chlorophyll will not disperse in water; water-soluble chlorophyllin will not mix into oils. Using the wrong form for your phase creates floating green blobs instead of even color.

Assuming it is identical to food-grade liquid chlorophyll — Food-grade versions may contain carriers (glycerin, water, preservatives) that are not formulated for cosmetic stability. Use cosmetic-grade for predictable results.

Expecting green in high-pH soap long-term — In cold-process soap, chlorophyll usually holds its green well during cure but can shift toward olive-brown over many months. Use at adequate concentration to compensate for slight fading.

Staining equipment — Chlorophyll stains silicone spatulas, plastic containers, and porous surfaces permanently green. Use glass or stainless steel when measuring.

Substitutes

• Spirulina Extract — blue-green, natural, but fades faster especially in soap. Better for wash-off products.
• Chromium Oxide Green (CI 77288) — mineral pigment, extremely stable, opaque. Not plant-derived.
• Matcha Powder — gives green initially but fades to brown over weeks. Only for fresh-use products.
• French Green Clay — muted sage-green, earthy tone rather than vivid green. Works in soap and masks.