epi.logic Daily Dose Versus Prequel Lucent-C Brightening Vitamin C Serum
Updated on May 29, 2025
Overview
What they are
These products are both 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, common allergens, fragrances, oils, parabens or silicones
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
epi.logic Daily Dose 25 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 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
epi.logic Daily Dose 25 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Ingredients Side-by-side
Water
Skin ConditioningAscorbic Acid
Antioxidant
Ethoxydiglycol
HumectantSorbitol
Humectant
Propanediol
Solvent
Glycerin
Humectant
Niacinamide
Smoothing
Betaine
Humectant
Panthenol
Skin Conditioning
Ferulic Acid
Antimicrobial
Acetyl Glucosamine
Skin ConditioningAminopropyl Ascorbyl Phosphate
Antioxidant
1,2-Hexanediol
Skin Conditioning
Caprylhydroxamic Acid
Ammonium Sulfate
Tremella Fuciformis Sporocarp Extract
Antioxidant
Pentylene Glycol
Skin ConditioningSodium Hyaluronate
Humectant
Cystoseira Tamariscifolia Extract
Skin ConditioningGlyceryl Undecylenate
Emollient
Glyceryl Caprylate
EmollientSilybum Marianum Extract
Skin ConditioningGlutamylamidoethyl Imidazole
Sodium Benzoate
Masking
Superoxide Dismutase
Antioxidant
Water, Ascorbic Acid, Ethoxydiglycol, Sorbitol, Propanediol, Glycerin, Niacinamide, Betaine, Panthenol, Ferulic Acid, Acetyl Glucosamine, Aminopropyl Ascorbyl Phosphate, 1,2-Hexanediol, Caprylhydroxamic Acid, Ammonium Sulfate, Tremella Fuciformis Sporocarp Extract, Pentylene Glycol, Sodium Hyaluronate, Cystoseira Tamariscifolia Extract, Glyceryl Undecylenate, Glyceryl Caprylate, Silybum Marianum Extract, Glutamylamidoethyl Imidazole, Sodium Benzoate, Superoxide Dismutase
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-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
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 AcidEthoxydiglycol is a synthetic solvent.
Solvents are used to keep ingredients together in a product. They can help dissolve ingredients to stable bases or help evenly distribute ingredients throughout the product.
Ethoxydiglycol also helps deliver other key ingredients into the skin.
Learn more about EthoxydiglycolFerulic Acid is a plant based antioxidant. By fighting free-radicals, ferulic acid can help reduce the formation of fine lines and hyperpigmentation.
When used with Vitamin C, Ferulic Acid has shown to prevent Vitamin C from breaking down. In other words, it acts as a stabilizer.
Ferulic Acid is sometimes used to preserve food. Foods containing Ferulic Acid include: oats, rice, eggplant, citrus.
In medicine, Ferulic Acid is being studied for helping with diabetes, Alzheimer's, and cardiovascular diseases.
Learn more about Ferulic AcidNiacinamide 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 NiacinamidePropanediol 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 PropanediolWater. 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 WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
epi.logic Daily Dose 25 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Reviews
Here's what our community thinks
