GlowLab 5:16™ PURESHINE METHOD Vitamin C Serum - 15% L-Ascorbic Acid
GlowLab 5:16™ PURESHINE METHOD Vitamin C Serum - 15% L-Ascorbic Acid
Professional-grade vitamin C formulation
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Developed by a chemistry educator with a B.S. in Toxicology
Made in the USA • Vegan • Cruelty-free • Non-Comedogenic • Fragrance-free
PURESHINE METHOD is a science-driven vitamin C serum formulated with 15% pure L-ascorbic acid and complementary antioxidants to support radian, healthy-looking skin.
Pure L-ascorbic acid is highly effective but notoriously unstable. Concentration, pH, and formulation all matter when creating a vitamin C serum designed to remain effective and fresh.
Formulated with 15% L-Ascorbic Acid, Vitamin E, and ferulic acid, PURESHINE METHOD provides antioxidant support against environmental stress while supporting collagen production and a more even, radiant-looking complexion.
Created by a chemistry educator with a background in toxicology, PURESHINE METHOD reflects a science-first approach to skincare—focused on purposeful ingredients, thoughtful formulation, and the science behind why they work.
Why You'll Love It
- 15% Pure L-Ascorbic Acid
- Small-batch crafted for freshness
- Thoughtfully formulated with only purposeful ingredients
- Vegan & Cruelty-Free
- Fragrance-Free
- Silicone-Free
- Paraben-Free
- Non-Comedogenic
- Made in the USA
Skin Benefits
- Brightens uneven skin tone
- Supports collagen production
- Enhances skin radiance and texture
- Provides antioxidant protection from environmental stress
What This Serum Helps Improve
- Dull or tired-looking skin
- Uneven skin tone or dark spots
- Early signs of collagen loss
- Skin exposed to daily environmental stress
Key Ingredients
15% L-Ascorbic Acid (Vitamin C)
Brightens skin and supports healthy collagen production.
Vitamin E
Supports antioxidant protection and skin health.
Ferulic Acid
Helps stabilize vitamin C and enhance antioxidant performance.
Hyaluronic Acid
Helps attract moisture for hydrated, smoother-looking skin.
Pro-Vitamin B5 (Panthenol)
Helps soothe skin and support the skin's moisture barrier.
Who It's For
- Combination Skin
- Sun-damaged Skin
- Environmentally Stressed Skin
- Those seeking brighter, more radiant-looking skin
How to Use
Apply 2-3 drops to clean skin and gently press into the face and neck. Follow with moisturizer and sunscreen.
Suitable for daily use. Vegan, cruelty-free, fragrance-free, and non-comedogenic,
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Benefits
Helps brighten skin, support collagen, and defend against daily oxidative stress.
- Helps improve uneven tone and dullness
- Supports collagen production for firmer-looking skin
- Reduces the appearance of fine lines over time
- Defends against daily oxidative stress
How to Use
Apply 2-3 drops to clean, dry skin each morning. Gently press into the face and neck, avoiding the eye area.
Allow the serum to absorb fully, then follow with moisturizer and broad-spectrum sunscreen.
For best results, use daily.
Use in the morning as part of your antioxidant skincare routine.
Ingredients
Formulated with clinically studied antioxidants and skin-supporting ingredients.
Key Ingredients
- 15% L-Ascorbic Acid (Vitamin C): Clinically shown to brighten, firm, and protect against environmental oxidative stress
- Ferulic Acid: A powerful plant-derived antioxidant that helps stabilize vitamin C and improve its effectiveness
- Vitamin E (Tocopherol): Supports antioxidant protection and helps reinforce the skin's natural barrier
- Hyaluronic Acid (Sodium Hyaluronate): A moisture-binding molecule that hydrates and plumps the skin for a smooth, radiance appearance
- Panthenol (Pro-Vitamin B): Helps soothe skin and support the skin barrier
FULL INGREDIENT LIST (INCI)
Aqua (Water), Ethoxydiglycol, Ascorbic Acid, Propylene Glycol, Glycerin, Laureth-23, Ferulic Acid, Tocopherol, Panthenol, Sodium Hyaluronate, Sodium Hydroxide, Citric Acid, Ethylhexylglycerin, Phenoxyethanol
Why it works: This antioxidant system pairs pure L-ascorbic acid with ferulic acid and vitamin E to enhance stability, strengthen antioxidant protection, and support brighter, healthier-looking skin.
Shipping & Returns
Shipping: Orders ship within 2-3 business days from the United States. Once shipped, you'll receive tracking information via email. Shipping times may vary by location.
Returns: Due to the nature of skincare products, all sales are final. If your order arrives damaged or defective, please contact us within 7 days of delivery at info@glowlab516.com and we'll take care of you.
FAQs
When should I use this serum? Use once daily in the morning on clean, dry skin. Always follow with sunscreen.
Can I use this with other active ingredients? Yes. This serum pairs well with hydrating and barrier-supporting products. If using multiple actives, apply vitamin C first and introduce new products gradually.
Is this safe for sensitive skin? This formula contains pure L-ascorbic acid, which may cause mild tingling upon application. We recommend a patch test before first use, especially for sensitive skin.
Why does vitamin C sometimes tingle? L-ascorbic acid works at an acidic pH to remain active and effective. A brief tingling sensation is normal and typically subsides quickly.
How long will one bottle last? With regular use 2-3 drops daily, one bottle lasts approximately 6-8 weeks.
See the Texture
- 5 stars: 25 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
I've been using the Glow Lab 516 Pure Sunshine Methods Vitamin C Serum for a while now, and I'm genuinely impressed. It absorbs quickly, feels lightweight, and leaves my skin looking healthy and radiant without feeling sticky or greasy.
One of the biggest surprises for me is how well it works with my sensitive skin. I'm usually cautious about trying new vitamin C products because they can sometimes cause irritation, but I've had no redness, stinging, or breakouts with this serum.
I’ve seen more improvement especially with reduction of discoloration and added radiance than I saw with Skinceuticals that i used for the last couple years. Great find!
I really love this serum! It’s become a staple in my skincare routine 🤩
Love this product… my skin feels so smooth when I use it!! Highly recommend ❤️
Wonderful product! I have skin that tends to breakout and have no issues with this product! I use it daily and it gives me a great glow!!
I have been using GlowLab 5:16 TM Vitamin C serum now for 60 days and I feel a big difference. My skin is dewy and my dull complexion has a nice glow. My finer lines and wrinkles are smoother and I credit this amazing serum since I haven’t made any other changes to my skin routine.
Thank you for figuring out the science behind the encapsulation for freshness. I love your product!
Using the vitamin c serum is so refreshing
Love it
Love!
This vitamin C is the BEST one that I have tried. Created in small batches by a knowledgeable chemistry teacher, this formula is incredible. It has a luxurious feel, never leaves a sticky feeling, and has helped to brighten and even out my skin tone. I have had zero irritation, which is amazing because I have very sensitive skin. I am about halfway through my first bottle, and am already planning to purchase another. This has become a holy grail for me. I recommend it to everyone I can!
As a professional Vitamin C wearer, I take this subject very seriously. I’ve tested everything from the $185 gold standard to the $9.99 bottle sitting on the supermarket shelf, and let me tell you, GlowLab 5:16 has officially earned top marks. The formula is absolutely beautiful. It’s lightweight, absorbs effortlessly, never feels sticky, and leaves my skin looking healthy, radiant, and glowing every single time. It also plays incredibly well with the rest of my skincare routine, which is something I always look for. After putting this one through my personal skincare report card, I can confidently say it graduates with honors. GlowLab 5:16 is one of the best Vitamin C serums I’ve used, and it’s an easy recommendation from me. This one is absolutely worth adding to your routine.
This product makes a big difference in the texture of my skin. I am in the sun more than I should be, and I notice a difference in the evening out of skin tone. Not greasy and a little goes a long way. Love this product!
I’ve been using this Vitamin C serum for a few weeks, and my skin looks noticeably brighter and more radiant. It leaves my face feeling soft, smooth, and hydrated without feeling greasy.
Amazing product!
I will definitely make it part of my daily skin care routine!
A must product to have for keeping your facial skin healthy and fresh.
I have just ordered my second bottle of Glow Lab Pureshine Method. I had previously used another Vitamin C serum. Within a couple of weeks of using Glow Lab, I began to notice a difference. There was a glow to my face and my skin felt so smooth! I made the change and am glad I did!
Virginia Beelet
The BEST serum ever. Makes your makeup go on so smoothly and I can definitely tell a difference in less than a month!!!!!!
I'm 52 and trying to prioritize my skin care and love the way this brightens and evens out my uneven tone!
This is a wonderful product that makes my skin look refreshed and youthful. I love the Matthew 5:16 reference so much, and always think about sharing my light on a hill, every time I use it.
Just bought a second bottle as this really does make my face look brighter and more youthful with consistent use.
The texture and consistancy is great. It only take a little bit to cover my face and neck; I use it on the back of my hands too. It absorbs quickly and is soothing post shaving.
For the past 6 weeks, I’ve applied a small amount each morning before adding sun protection. I definitely noticed a difference in my skin tone and smoothness. I also love that it is a clean product!
Works great!
Amazing product gets rid of menopausal brown spots
Easy and fast to apply!
My face feels so soft and healthy looking since I've been using this vitamin c serum