Question 1

What's the difference between a carrier oil and an essential oil?

Accepted Answer

A carrier oil is a fatty base oil like jojoba, sweet almond, or argan that makes up the bulk of a formula and is safe to apply directly to skin. Essential oils are concentrated aromatic extracts added at 1-3% for scent and must be diluted in a carrier first. You buy carrier oils by the ounce or pound as the base of balms, body oils, and serums, then add a few drops of essential oil for fragrance.

Question 2

Which butter should I use for body butter versus lip balm?

Accepted Answer

Shea butter is the go-to for whipped body butter because it stays soft and absorbs well, while cocoa butter suits lip balm and lotion bars since it sets harder and adds a glossy, protective finish. Mango butter sits in between, lighter and less greasy than shea. Many makers blend two: shea for creaminess plus a little cocoa or beeswax for structure. A pound of cosmetic-grade butter runs about $10-$30 and yields several batches.

Question 3

What does refined versus unrefined mean for oils and butters?

Accepted Answer

Unrefined oils and butters are minimally processed, so they keep their natural color, scent, and more nutrients but have a shorter shelf life and a nutty or smoky aroma that can affect your scent blend. Refined versions are filtered and deodorized, giving a neutral smell, lighter color, and longer life, ideal when you want fragrance to come only from added oils. For face products, unrefined cold-pressed is popular; for soap and scented balms, refined keeps results consistent.

Question 4

How do I know an oil or butter is cosmetic-grade and skin-safe?

Accepted Answer

Look for the exact botanical name, the extraction method (cold-pressed or expeller-pressed), and a stated cosmetic or food grade with a recent batch number or COA. For facial use, check the comedogenic rating; jojoba and argan rate low, while coconut and cocoa butter rate higher and can clog pores. Soapmakers should confirm a listed SAP value for accurate lye calculation. Avoid candle- or food-flavoring oils for leave-on skincare.

Question 5

How much do carrier oils and butters cost?

Accepted Answer

Sample sizes run about $4-$10, enough for a test batch. A pound of common oils like sweet almond, fractionated coconut, or grapeseed lands $10-$25, while premium argan, rosehip, or jojoba runs $15-$45 per pound. Cosmetic-grade shea, mango, and cocoa butter typically cost $10-$30 a pound. Buying by the pound drops the per-ounce price sharply, but start with samples to test feel and scent before committing to bulk.

Question 6

How long do carrier oils and butters last before going rancid?

Accepted Answer

Most carrier oils keep 1-2 years stored cool and dark, but high-linoleic oils like rosehip, grapeseed, and hemp oxidize faster and last 6-12 months, so refrigerate them and buy small. Butters such as shea, mango, and cocoa hold 1-2 years in a cool, dry spot. Watch for a sour, crayon-like smell, which signals rancidity. Adding vitamin E (tocopherol) at about 0.5-1% extends shelf life in leave-on products.

Carrier Oils & Butters for DIY Skincare

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