Prequel Lucent-C Brightening Vitamin C Serum Versus Haruharu Wonder Centella 4% TXA Dark Spot Go Away 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 5 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, 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, fragrances, 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
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
SolventNiacinamide 4%
Smoothing
Tranexamic Acid 4%
Astringent
Butylene Glycol
Humectant
1,2-Hexanediol
Skin ConditioningPyrus 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
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 WaterPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolAscorbic 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 AcidNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
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.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
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
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Reviews
Here's what our community thinks
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
When I first got into skincare years ago, I tried the extremely expensive ce ferulic everyone knows and, though I loved it and it made a big difference in my skin, I couldn’t justify the price for what ended up being half a bottle before it oxidized. All other vitamin c just irritated my skin so I gave up on it. I had a reoccurrence of my acne recently and remembered that this product had been a Show more
I really like this Vitamin C serum and have noticed an improvement in some of my dark spots. The serum is packaged in opaque glass to protect it from UV. I don't like the pump very much as the formula is very liquid and it shoots out fast - something to be aware of. It also has to go on first (before other serums) as things can pill on top of it. However, for the price and effectiveness, I'm Show more
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
