Poor

wintergreen oil

A type of mint often used to ease the discomfort of sore muscles...

Plant Extracts, Sensitizing

Poor

witch hazel

Commonly used plant extract that can have antioxidant properties...

Skin-Soothing, Plant Extracts, Antioxidants, Sensitizing

Good

xanthan gum

Used as a thickening agent.

Thickeners/Emulsifiers, Texture Enhancer

Best

xanthophyll

Also known as lutein, this is a cartenoid pigment from plants that functions as an antioxidant.

Antioxidants, Plant Extracts

Poor

Xi xin

TBC

Skin-Soothing, Sensitizing, Plant Extracts

Good

Ximenia americana oil

Latin name for plum oil; it can have emollient properties.

Plant Extracts, Antioxidants, Emollients

Best

xylitol

Xylitol is a sugar alcohol that may be plant-derived or synthetic.

Thickeners/Emulsifiers, Texture Enhancer, Slip Agents

Good

xylitylglucoside

An ingredient derived from two water-binding plant sugars, xylitol and glucose.

Hydration

Good

xylose

Form of sugar. Similar to other sugars, xylose has hydrating properties for skin.

Miscellaneous, Hydration

Good

xymenynic acid

Synthetic fatty acid that functions as a skin-softening agent.

Miscellaneous, Skin-Softening