Overview
What it is
Lip mask with 3 ingredients
Cool Features
It is vegan, cruelty-free, and reef safe
Suited For
It has ingredients that are good for dry skin
Free From
It doesn't contain any harsh alcohols, common allergens, fragrances, parabens, silicones or sulfates
Fun facts
BYS is from Australia. This product is used in 2 routines created by our community.
We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.
Warning: Incomplete INCI list
This happens when the brand does not publicly disclose the full list of ingredients.
If you've found the full list, please suggest an edit.
Benefits
Concerns
Ingredients Explained
This ingredient is also known as shea butter. It is a plant-derived extract from the nuts of the Africa shea tree and one of the most well-studied emollients.
Because it has a high concentration of fatty acids (primarily oleic, stearic, and linoleic) it is able to form a protective barrier on the skin's surface. This helps seal in moisture and prevents transepidermal water loss (TEWL).
In vitro research found an increase in skin hydration by 58% and a decrease in TEWL by 37.8% after 24 hours of applying this ingredient (pretty impressive for a single ingredient!).
Besides hydration, shea butter also contains triterpenes that have anti-inflammatory potential. In particule, lupeol cinnamate has shown the highest anti-inflammatory activity in vivo.
Shea butter also contains vitamins A and E which may contribute to antioxidant activity.
While Shea Butter has an SPF rating of about 3-4, it is not a sunscreen replacement.
This ingredient may not be fungal acne safe because its fatty acids fall within the C11-C24 range that the Malassezia yeast can metabolize.
Learn more about Butyrospermum Parkii ButterThis ingredient is also known as Macadamia Seed Oil. It's an emollient with a fatty acid profile that closely mirrors the skin's own lipid makeup.
The palmitoleic acid content is especially notable as it's somewhat rare in plant oils. Palmitoleic acid is something your skin already makes naturally. It helps keep cell membranes structured and plays a role in fighting off harmful microbes.
This palmitoleic content is also part of why macademia seed oil absorbs quickly and doesn't leave much of a greasy residue.
It also contains oleic acid, linoleic acid, and phytosterols that can help reduce redness.
In vitro research has shown the oil to have meaningful antioxidant activity, protect fats in the skin from oxidative damage, and slow down the enzyme that breaks down hyaluronic acid.
A 2024 clinical study found it effective at improving skin hydratino and reducing wrinkle appearance when formulated into nanoemulsions.
Because it carries oleic acid (C18) and palmitic acid (C16), this ingredient may not be fungal acne safe. This is because the Malassezia yeast metabolizes in the C11-24 chain length range.
You'll also see this ingredient listed as: Macadamia Integrifolia Seed Oil .
These two oils are identical in composition and M. ternifolia is an older INCI naming convention for the edible macadamia nut while M. integrifolia is the species actually cultivated for oil production. Both names refer to the same oil.
Learn more about Macadamia Ternifolia Seed OilHelianthus Annuus Seed Oil is a plant oil derived from the seeds of a sunflower.
It is rich in fatty acids, primarily linoleic acid and oleic acid. This gives it emollient and skin conditioning properties.
The reason this ingredient is so effective is because it forms a thin film on the skin that reduces transepidermal water loss (TEWL) while supplying linoleic acid to the stratum corneum to improve barrier strength.
The high linoleic acid content is particularly noteworthy for acne-prone skin.
Research suggests that acne-prone skin tends to be deficient in linoleic acid in sebum. Topical application may help replenish this to support a healthier follicular environment and less comedone-promoting sebum.
One randomized study found sunflower seed oil preserved skin barrier integrity in adult volunteers with and without atopic dermatitis (outperforming olive oil).
This ingredient is well-studied, gentle, and an effective emollient suitable for most skin types.
On fungal acne: This ingredient may not be Fungal acne (Malassezia folliculitis) safe. This is because it contains fatty acids with carbon chain lengths in the C11-C24 range.
Learn more about Helianthus Annuus Seed OilReviews
No written reviews yet. Be the first to review this product.
Recent searches
Search reviews by skin type, ingredient, or keyword.
Where it's from
BYS is a Australian brand
Often compared with
We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about usยท Updated February 3, 2026 • Added by brinny
