Ingredient Substitution Guide
When and how to swap ingredients without breaking your formula
Before You Substitute
Ingredient substitutions fall into two types: functional equivalents (same ingredient class, similar properties) and functional swaps (different ingredient, same job). Functional equivalents are usually straightforward — two fatty alcohols, two similar carrier oils. Functional swaps require more care because the new ingredient may behave differently even if it serves the same broad purpose.
The safest approach to any substitution:
- Make a small test batch (100–200 g) with the substituted ingredient
- Check appearance, texture, and skin feel immediately after making
- Observe stability over 2–4 weeks at room temperature and in a warm environment (40°C / 104°F)
- Only scale up once stability is confirmed
At a Glance
- Same ingredient class = usually safe to swap; test anyway
- Emulsifiers are the riskiest substitution — match HLB and usage rate
- Never assume preservative substitutions are equivalent without testing
- Wax substitutions: harder wax needs less; softer wax needs more
- Oil swaps are generally forgiving if fatty acid profiles are similar
Wax Substitutions
| Ingredient | Substitute(s) | Rate Adjustment | Notes |
|---|---|---|---|
| Beeswax | Candelilla wax | Use ~50% of beeswax amount | Candelilla is harder; adjust down |
| Beeswax | Carnauba wax | Use ~25–30% of beeswax amount | Much harder; small amounts go far |
| Beeswax | Rice bran wax | 1:1 starting point | Similar hardness; test texture |
| Carnauba wax | Candelilla wax | ~2:1 (candelilla is softer) | Adjust for desired hardness |
| Candelilla wax | Carnauba wax | ~1:2 (carnauba is harder) | Adjust for desired hardness |
Hardness Is Not Linear
Carrier Oil Substitutions
| Ingredient | Substitute(s) | Key Difference | Notes |
|---|---|---|---|
| Rosehip oil | Sea buckthorn (diluted), marula oil | Similar linoleic/vitamin A profile | Rosehip is high linoleic; prone to oxidation |
| Jojoba oil | Squalane | Squalane is lighter; not technically an oil (liquid wax vs hydrocarbon) | Both non-greasy; jojoba forms stronger barrier film |
| Sweet almond oil | Apricot kernel oil | Very similar fatty acid profile | Nearly identical substitution |
| Coconut oil | Palm kernel oil | Very similar lauric acid content | Not vegan-acceptable for some; similar in formula |
| Castor oil | No close substitute | Unique ricinoleic acid and viscosity | In soap: reduces lather if removed; in lip balm: provides gloss |
| Avocado oil | Macadamia oil | Similar oleic content; macadamia has palmitoleic acid | Macadamia is lighter in feel |
Pro Tip
Emulsifier Substitutions
Emulsifiers are the most consequential substitution in an emulsion. The table below is a starting point — treat every emulsifier substitution as a reformulation, not a swap.
| Emulsifier | Substitute Approach | Key Consideration |
|---|---|---|
| Polawax (INCI: Emulsifying Wax NF) | BTMS-50 (changes to cationic), or HLB-matched blend | Polawax is nonionic self-emulsifying; substitutes change charge and HLB |
| Olivem 1000 | Combine cetearyl glucoside + cetearyl alcohol (Eumulgin B2 approach) | Olivem is a naturally derived O/W emulsifier; match HLB ~10–11 |
| BTMS-50 | BTMS-25 (lower behentrimonium content) | BTMS-25 needs higher usage rate; different conditioning level |
| Lecithin | Hydroxylated lecithin (better O/W stability) | Lecithin alone forms unstable emulsions; usually used as co-emulsifier |
Thickener Substitutions
| Thickener | Substitute(s) | Notes |
|---|---|---|
| Xanthan gum | Hydroxyethylcellulose (HEC) | HEC causes less pilling; similar viscosity at similar rates |
| Xanthan gum | Carbomer (Carbopol) | Requires neutralization; much higher viscosity at lower use rate |
| Carbomer | Sodium polyacrylate | Different texture — more fluid gel; similar require-neutralization behavior |
| HEC | Hydroxypropyl cellulose | Similar behavior; slightly different feel |
| Cetearyl alcohol (lotion body) | Increase oil phase weight | Fatty alcohol provides body differently from gum thickeners — not 1:1 |
The most important distinction in thickener substitutions is between fatty alcohol thickeners (cetearyl alcohol, cetyl alcohol, stearyl alcohol) and polymer/gum thickeners (xanthan, carbomer, HEC). These are not interchangeable — fatty alcohols provide body through the oil phase and co-emulsifier effect; polymer thickeners provide viscosity through water-phase gelation. Substituting a polymer for a fatty alcohol (or vice versa) requires reconsidering the entire formula structure.
Vegan and Allergy-Related Substitutions
Common substitutions for allergen or ethical reasons:
- Beeswax → Candelilla or carnauba wax (vegan): See wax table above. Adjust rate significantly.
- Lanolin → Jojoba, shea butter, or mango butter (vegan/lanolin allergy): Not identical — lanolin has a unique occlusive-emollient character. Use a combination of occlusive (beeswax alternative + shea) to approximate.
- Nut oils (almond, macadamia, hazelnut) → Sunflower, safflower, fractionated coconut (nut allergy): Sunflower and safflower are lightweight, high-linoleic alternatives. Fractionated coconut oil (caprylic/capric triglycerides) is stable and neutral. Derived from coconut, so may not be suitable for all coconut-sensitive individuals.
- Honey → Sodium PCA or glycerin (vegan): Honey's humectant function can be approximated with humectants; its other skin-feel properties are harder to replicate exactly.