Sunday || Sunday Hair Flourish Daily Nourishing Serum
A hair serum with 16 ingredients, including vitamin E.
Overview
What it is
Hair serum with 16 ingredients that contains Vitamin E
Cool Features
It is vegan, cruelty-free, and reef safe
Suited For
It has ingredients that are good for dry skin and brightening skin
Free From
It doesn't contain any harsh alcohols, common allergens, parabens, silicones or sulfates
Fun facts
Sunday || Sunday is from United States.
We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.
What's inside
Ingredients List
Helianthus Annuus Seed Oil
EmollientDiisostearyl Dimer Dilinoleate
EmollientC12-15 Alkyl Benzoate
AntimicrobialCocoyl Adipic Acid/Trimethylolpropane Copolymer
Cocos Nucifera Oil
MaskingPEG/PPG-8/3 Diisostearate
EmulsifyingSilica Dimethyl Silylate
EmollientCaprylic/Capric Triglyceride
MaskingCarthamus Tinctorius Seed Oil
MaskingTocopheryl Acetate
AntioxidantPolyurethane-79
Methyl Glucose Dioleate
EmollientBiotin
AntiseborrhoeicMusa Sapientum Fruit Extract
Skin ConditioningTrimethylolpropane
HumectantParfum
MaskingHelianthus Annuus Seed Oil, Diisostearyl Dimer Dilinoleate, C12-15 Alkyl Benzoate, Cocoyl Adipic Acid/Trimethylolpropane Copolymer, Cocos Nucifera Oil, PEG/PPG-8/3 Diisostearate, Silica Dimethyl Silylate, Caprylic/Capric Triglyceride, Carthamus Tinctorius Seed Oil, Tocopheryl Acetate, Polyurethane-79, Methyl Glucose Dioleate, Biotin, Musa Sapientum Fruit Extract, Trimethylolpropane, Parfum
Key Ingredients
Benefits
Concerns
Ingredients Explained
Helianthus 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 OilWe don't have a description for Diisostearyl Dimer Dilinoleate yet.
C12-15 Alkyl Benzoate is a lightweight emollient made by combinig benzoic acid with fatty alcohols that are 12-15 carbons long.
In cosmetics, it plays several roles:
The Cosmetic Review Expert Panel has concluded the alkyl benzoate group to be safe as used in cosmetics; it wasn't found to be a skin irritant and unlikely to be absorbed due to its low water solubility.
This report recorded almost 1000 reported uses with concentrations up to 59% in leave-on products but your cosmetics will typically use 0.5-15% depending on the product.
It's often called a "SPF booster": this is because it keeps UV filters properly dissolved and evenly distributed to support a sunscreen's performance. It doesn't actually raise SPF on its own.
Overall, this ingredient is well tolerated.
This ingredient is fungal acne safe because it is an ester of benzoic acid.
Think of this ingredient as two parts stuck together: an oily part and an acid part. Malassezia only gets a meal when it can snip off a fatty acid to eat. With C12-15 Alkyl Benzoate, the acid part is benzoic acid, which isn't a fatty acid and which the yeast can't use as food.
Benzoic acid is actually used as a preservative to stop yeast from growing.
The oily part is a blend of C12-15 fatty alcohols but fatty alcohols in this size range can support only a little Malassezia growth (mostly for one species of Malassezia as well).
In the ingredient, those alcohols stay locked inside the molecule. The yeast can only reach them by snipping the benzoate bond, and that type of bond is harder for it to cut than a normal fatty bond.
So not much gets released. And whatever does get snipped comes packaged with benzoic acid, which discourages yeast growth.
Learn more about C12-15 Alkyl BenzoateWe don't have a description for Cocoyl Adipic Acid/Trimethylolpropane Copolymer yet.
This ingredient is also known as coconut oil. It is a plant-derived ingredient with skin conditioning properties.
The fatty acid profile of coconut oil is mostly lauric acid (~54%), followed by capric, caprylic, palmitic, and myristic acids. This profile allows it to penetrate easily into skin, moisturize, and improve dry skin.
A double-blind study confirmed that extra virgin coconut oil is as effective as mineral oil for treating very dry skin. Another study found it outperformed mineral oil for mild to moderate atopic dermatitis in children.
Another study from 2018 found that virgin coconut oil can soothe inflammation and boost key skin barrier proteins. Just know this evidence is still only from lab settings and not human trials.
It has also been shown to reduce Staphylococcus aureus, a bacteria that commonly overgrows in people with eczema.
Clinical testing shows very minimal skin irritation and no evidence of sensitization or phototoxicity.
Coconut oil gets flagged as a "fragrance" because it has a natural mild scent (not because it's a synthetic perfume). The European Cosmetic ingredient database also lists "perfuming" as a function of this ingredient.
Just so you know, the term "fragrance" is completely unregulated. Some brands still use botanical extracts or essential oils in their "fragrance-free" formulas, but regulatory databases technically classify these under "fragrance".
Coconut oil has a tiny and useless bit of natural SPF. Early lab studies clocked it around SPF 7-8 but a more recent study found the real number closer to SPF 1.2. It also offers no meaningful UVA protection (SPF only overs UVB rays).
The comedogenic rating of 4/5 means it has a high potential to clog pores; but it's worth noting that comedogenicity is highly individual and ratings cannot predict how an overall formula will behave on skin.
Since lauric acid is the dominant fatty acid, this ingredient may not be fungal acne safe. The Malassezia yeast feeds on fatty acids with carbon chain lengths between 11-24, and lauric acid falls within these lengths (C12).
Learn more about Cocos Nucifera OilWe don't have a description for PEG/PPG-8/3 Diisostearate yet.
This silica is mainly used to thicken oils and suspend particles in oils. It is not water soluble.
According to the manufacturer, it:
The manufacturer also claims this ingredient to be useful in makeup.
In lipstick formulations, this ingredient improves color payoff, reduces pigment settling, and reduces oil bleeding. This ingredient also improves the grip of powder products such as dry shampoos.
Learn more about Silica Dimethyl SilylateCaprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.
Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.
In practice, that translates to a long shelf life and a consistently elegant skin feel.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.
Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.
This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.
This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.
Learn more about Caprylic/Capric TriglycerideCarthamus Tinctorius Seed Oil comes from the seeds of the safflower plant. It is a skin conditioning agent that helps soften skin and keep it hydrated.
This seed oil has an unusual fatty acid profile: it is one of the highest linoleic acid plant oils out there (~55-77%). It also has low amounts of oleic acid, and this high-linoleic/low-oleic ratio gets people excited.
Linoleic acid helps maintain skin barrier integrity and is a building block for the ceramides in your stratum corneum. Notably, people with acne tend to have lower linoleic acid in their skin lipids as well (and this gets worse as acne gets more severe).
Overall, it's a lightweight, fast-absorbing oil that has a long safety track record. Lab testing has found it to be non-irritating for skin or eyes.
The Malassezia yeast can metabolize the fatty acids in this oil to grow; therefore this ingredient may not be fungal acne safe.
Learn more about Carthamus Tinctorius Seed OilTocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.
Tocopheryl Acetate is commonly found in both skincare and dietary supplements.
Learn more about Tocopheryl AcetateWe don't have a description for Polyurethane-79 yet.
Methyl Glucose Dioleate isn't fungal acne safe.
Biotin is a B vitamin that is naturally produced by our bodies. It is also called Vitamin H.
Our bodies use biotin in the metabolism process. It also helps our bodies use enzymes and move nutrients around. A biotin deficiency can lead to brittle hair and nails.
More research is needed on applying biotin topically. However, taking biotin orally has been shown to help nourish the skin, hair, and nails. They play a role in forming skin-hydrating fatty acids.
Biotin is water-soluble. It can be found in foods such as fish, eggs, dairy, nuts, and meat. Vitamin H stands for "haar" and "haut". These are the German words for hair and skin.
Learn more about BiotinThis ingredient is also known as banana fruit extract. It has moisturizing and antioxidant properties.
Bananas are nutrient rich in vitamins A, B, C, E, and minerals like magnesium.
Early studies suggest it may also help reduce hyperpigmentation by interrupting certain skin processes but more research is needed.
Learn more about Musa Sapientum Fruit ExtractWe don't have a description for Trimethylolpropane yet.
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.
For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.
One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.
Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Parfum can also be used to mask or cover an unpleasant scent.
The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.
Learn more about ParfumReviews
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Where it's from
Sunday || Sunday is a American brand
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 us· Published August 25, 2023