Nature Republic Vitapair C Dark Spot Serum Versus Good (Skin) Days C’s The Day Serum
Overview
What they are
These products are both reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain niacinamide, Vitamin C and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens, silicones or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Nature Republic Vitapair C Dark Spot Serum 29 ingredients
Good (Skin) Days C’s The Day Serum 28 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Nature Republic Vitapair C Dark Spot Serum 29 ingredients
Good (Skin) Days C’s The Day Serum 28 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Ingredients Side-by-side
Citrus Limon Fruit Extract
Masking
Niacinamide
Smoothing
Tranexamic Acid
Astringent
Ethoxydiglycol
HumectantPropanediol
Solvent1,2-Hexanediol
Skin ConditioningDipropylene Glycol
MaskingCentella Asiatica Extract
Cleansing
Melia Azadirachta Flower Extract
Skin ConditioningMelia Azadirachta Leaf Extract
Skin ConditioningCurcuma Longa Root Extract
Masking
Ocimum Sanctum Leaf Extract
Skin ConditioningCorallina Officinalis Extract
Skin ConditioningWater
Skin ConditioningCholeth-24
EmulsifyingButylene Glycol
Humectant
Caprylyl Glycol
EmollientSodium Polyacryloyldimethyl Taurate
Emulsion StabilisingTromethamine
BufferingEthylhexylglycerin
Skin ConditioningPanthenol
Skin Conditioning
Dipotassium Glycyrrhizate
Humectant
Ascorbic Acid
Antioxidant
Ascorbyl Glucoside
Antioxidant
Glutathione
Tocopherol
Antioxidant
Carbomer
Emulsion StabilisingDisodium EDTA
Parfum
Masking
Citrus Limon Fruit Extract, Niacinamide, Tranexamic Acid, Ethoxydiglycol, Propanediol, 1,2-Hexanediol, Dipropylene Glycol, Centella Asiatica Extract, Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Curcuma Longa Root Extract, Ocimum Sanctum Leaf Extract, Corallina Officinalis Extract, Water, Choleth-24, Butylene Glycol, Caprylyl Glycol, Sodium Polyacryloyldimethyl Taurate, Tromethamine, Ethylhexylglycerin, Panthenol, Dipotassium Glycyrrhizate, Ascorbic Acid, Ascorbyl Glucoside, Glutathione, Tocopherol, Carbomer, Disodium EDTA, Parfum
Water
Skin ConditioningButylene Glycol
Humectant
Ascorbic Acid
Antioxidant
Glycerin
Humectant
1,2-Hexanediol
Skin ConditioningSodium Bicarbonate
Abrasive
Myrciaria Dubia Fruit Extract
Skin ConditioningGlycyrrhiza Glabra Root Extract
Bleaching
Niacinamide
Smoothing
Magnesium Ascorbyl Phosphate
Antioxidant
Arbutin
Antioxidant
Tocopheryl Acetate
Antioxidant
Coptis Japonica Extract
AntimicrobialPanax Ginseng Berry Extract
Skin ConditioningCrocus Sativus Flower Extract
MaskingTuber Magnatum Extract
Skin ConditioningHibiscus Sabdariffa Flower Extract
Skin ConditioningTheobroma Cacao Extract
Skin ConditioningGlycereth-25 PCA Isostearate
Emulsifying
Hydroxydecyl Ubiquinone
Antioxidant
Sodium Metabisulfite
Antioxidant
Xanthan Gum
EmulsifyingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Dextrin
AbsorbentCaprylic/Capric Triglyceride
MaskingCetyl Ethylhexanoate
EmollientHydrogenated Lecithin
EmulsifyingWater, Butylene Glycol, Ascorbic Acid, Glycerin, 1,2-Hexanediol, Sodium Bicarbonate, Myrciaria Dubia Fruit Extract, Glycyrrhiza Glabra Root Extract, Niacinamide, Magnesium Ascorbyl Phosphate, Arbutin, Tocopheryl Acetate, Coptis Japonica Extract, Panax Ginseng Berry Extract, Crocus Sativus Flower Extract, Tuber Magnatum Extract, Hibiscus Sabdariffa Flower Extract, Theobroma Cacao Extract, Glycereth-25 PCA Isostearate, Hydroxydecyl Ubiquinone, Sodium Metabisulfite, Xanthan Gum, Ethylhexylglycerin, Adenosine, Dextrin, Caprylic/Capric Triglyceride, Cetyl Ethylhexanoate, Hydrogenated Lecithin
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about Niacinamide1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservatives
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
Ascorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.
Not only is vitamin C great for your overall health and immune system, it also has plenty of benefits on your skin.
Vitamin C is best used for brightening skin. It improves dark spots, acne scars, and hyperpigmentation. This is because it blocks the process of skin darkening when exposed to UV.
Remember: Vitamin C should not replace sunscreen!
Your skin uses vitamin C to build collagen. Collagen is one key component in having a strong skin barrier and plump skin. Vitamin C also plays a role in regulating collagen, thus making it effective in improving wrinkles and fine lines.
Ascorbic acid shows potent antioxidant activity. As an antioxidant, it helps fight free-radicals. Free-radicals are molecules that may damage your skin cells. These antioxidants also protect skin against UV damage.
The best formulations include Vitamin E and/or ferulic acid. These two ingredients help stabilize and provide a boost in the benefits of ascorbic acid. This is because ascorbic acid becomes unstable when exposed to UV and air. In fact, you can tell your ascorbic acid has oxidized when it turns an orange-yellow color.
Ascorbic acid is generally compatible with other ingredients. However, using ascorbic acid with other active ingredients might cause irritation. Two ingredients: copper ions and benzoyl peroxide, will inactivate ascorbic acid completely.
Read more about other types of Vitamin C:
Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.
Learn more about Ascorbic AcidIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Nature Republic Vitapair C Dark Spot Serum 29 ingredients
Good (Skin) Days C’s The Day Serum 28 ingredients
Reviews
Here's what our community thinks
Nature Republic Vitapair C Dark Spot Serum 29 ingredients
In the long term, it has actually made a difference about my dark spots, but the ingredients confuse me a little: It has a very high concentration of Lemon Extract (around 80%) but in the other hand this ingredient is way less effective than Vitamin-C itself, which also appears in the formula, but so down in the list that I really doubt it's above a 1%. I think Niacinamide (4%) and Tranexamic Acid Show more
