Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum Versus Numbuzin No. 5 Goodbye Blemish Serum
Updated on March 31, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain niacinamide and Vitamin C
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, 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
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Numbuzin No. 5 Goodbye Blemish Serum 39 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
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
Solvent
Niacinamide 4%
Smoothing
Tranexamic Acid 4%
Astringent
Butylene Glycol
Humectant
1,2-Hexanediol
Skin Conditioning
Pyrus Communis Fruit Extract
Skin ConditioningSodium Polyacryloyldimethyl Taurate
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningPolyglyceryl-10 Laurate
Skin Conditioning
Madecassoside
Antioxidant
Centella Asiatica Extract
Cleansing
Asiaticoside
Antioxidant
Ascorbic Acid
Antioxidant
Asiatic Acid
Skin ConditioningMadecassic Acid
Skin Conditioning
Sodium Ascorbyl Phosphate
Antioxidant
Water, Propanediol, Niacinamide 4%, Tranexamic Acid 4%, Butylene Glycol, 1,2-Hexanediol, Pyrus Communis Fruit Extract, Sodium Polyacryloyldimethyl Taurate, Ethylhexylglycerin, Polyglyceryl-10 Laurate, Madecassoside, Centella Asiatica Extract, Asiaticoside, Ascorbic Acid, Asiatic Acid, Madecassic Acid, Sodium Ascorbyl Phosphate
Hippophae Rhamnoides Extract
MaskingButylene Glycol
Humectant
Methyl Gluceth-20
Humectant
Dipropylene Glycol
MaskingGlycerin
Humectant
1,2-Hexanediol
Skin Conditioning
Niacinamide
Smoothing
Melia Azadirachta Flower Extract
Skin ConditioningOcimum Sanctum Leaf Extract
Skin Conditioning
Melia Azadirachta Leaf Extract
Skin ConditioningCurcuma Longa Root Extract
Masking
Corallina Officinalis Extract
Skin Conditioning
Citrus Limon Peel Oil
Masking
Citrus Aurantium Dulcis Peel Oil
Masking
Citrus Aurantifolia Oil
Cleansing
Polygonum Cuspidatum Root Extract
Antioxidant
Scutellaria Baicalensis Root Extract
AstringentCamellia Sinensis Leaf Extract
Antimicrobial
Glycyrrhiza Glabra Root Extract
Bleaching
Chamomilla Recutita Flower Extract
Masking
Rosmarinus Officinalis Leaf Extract
AntimicrobialCentella Asiatica Extract
Cleansing
Ascorbyl Glucoside
Antioxidant
Ascorbic Acid
Antioxidant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Panthenol
Skin Conditioning
Sodium Hyaluronate
Humectant
Dipotassium Glycyrrhizate
Humectant
Glycereth-26
Humectant
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Polyglyceryl-10 Laurate
Skin Conditioning
Carbomer
Emulsion StabilisingAllantoin
Skin Conditioning
Tromethamine
BufferingWater
Skin ConditioningHydrolyzed Jojoba Esters
Skin Conditioning
Disodium EDTA
Citral
Perfuming
Limonene
Perfuming
Hippophae Rhamnoides Extract, Butylene Glycol, Methyl Gluceth-20, Dipropylene Glycol, Glycerin, 1,2-Hexanediol, Niacinamide, Melia Azadirachta Flower Extract, Ocimum Sanctum Leaf Extract, Melia Azadirachta Leaf Extract, Curcuma Longa Root Extract, Corallina Officinalis Extract, Citrus Limon Peel Oil, Citrus Aurantium Dulcis Peel Oil, Citrus Aurantifolia Oil, Polygonum Cuspidatum Root Extract, Scutellaria Baicalensis Root Extract, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra Root Extract, Chamomilla Recutita Flower Extract, Rosmarinus Officinalis Leaf Extract, Centella Asiatica Extract, Ascorbyl Glucoside, Ascorbic Acid, 3-O-Ethyl Ascorbic Acid, Panthenol, Sodium Hyaluronate, Dipotassium Glycyrrhizate, Glycereth-26, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Polyglyceryl-10 Laurate, Carbomer, Allantoin, Tromethamine, Water, Hydrolyzed Jojoba Esters, Disodium EDTA, Citral, Limonene
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterNiacinamide 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 NiacinamideButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene Glycol1,2-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
Polyglyceryl-10 Laurate is an ester of lauric acid and Polyglycerin-10.
Polyglyceryl-10 Laurate is a cleansing agent and emulsifier. It helps gather dirt, oil, and other pollutants to be rinsed away. As an emulsifier, it helps prevent ingredients from separating, such as oil and water.
Polyglyceryl-10 Laurate may not be fungal acne safe.
Learn more about Polyglyceryl-10 LaurateCentella Asiatica Extract (Centella) is derived from an herb native to Southeast Asia. It is famous for its anti-inflammatory and soothing properties.
Centella is rich in antioxidants and amino acids, such as Madecassic Acid and Asiaticoside.
Studies show the compounds in centella help with:
The combination of all these properties makes centella effective at soothing, hydrating, and protecting the skin.
Other great components of centella include Vitamin A, vitamin C, several B vitamins, and Asiatic Acid.
Fun fact: Centella has been used as a medicine and in food for many centuries. As a medicine, it is used to treat burns, scratches, and wounds.
Learn more about Centella Asiatica ExtractAscorbic 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
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients
Reviews
Here's what our community thinks
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
When I first used this product I didn’t think it was doing anything but I continued to use it because it didn’t break me out. about 3-4 weeks later i’m looking back at old picture of my skin and it really does make a difference with dark spots. I was and currently using panoxyl 4% so maybe that played somewhat of a part but I do recommend this product for acne scars, dark spots but i didn’t find Show more
It’s been 3-4 months already since I started using this and it’s a great product. It’s lightweight, it didn’t irritate my skin at all and I also noticed that my skin really got brighter over time. However, it did little to nothing to fade my hyperpigmentation :( I’m guessing that my case is just really stubborn
Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients
I was not very knowledgable about skincare when I first tried this product, so I can't fault it for that, but I have to say it was extremely irritating for me.
If you're new to skincare and are looking for something for acne, I do not think you should start with this.
I'm honestly not sure what is in this that is supposed to treat acne besides Niacinamide, which I've come to suspect my Show more
I’m not sure if this did anything in terms of lightening acne marks but it may have contributed to one of the worst breakouts of my life. It has a mild citrus scent and is a gel that absorbs well without stickiness but nope it doesn’t work.
