# MARY & MAY 6 Peptide Complex Serum for skin with dark spots

**Lovi Fit: Average fit for skin with dark spots.**
Normal Skin Fit: High · Effectiveness: Average · Safety: Excellent.

Page: https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/dark-spots

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for the United States.

Brand: [MARY & MAY](https://lovi.care/skincare/brands/mary-and-may)
Category: [Serums and treatments](https://lovi.care/skincare/best/serums)

This fit is calculated for the concerns frequently associated with dark spots: hyperpigmentation, sun spots, and uneven skin tone. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for skin with dark spots; other serums fit it better.

## Why this fit

- Suitable for normal skin due to the presence of peptides like copper tripeptide-1 and hexapeptide-11, which support collagen stimulation and extracellular matrix synthesis, offering significant plumping and firming benefits.
- Glycerin and adenosine provide general hydration and soothing effects, which are supportive but not directly targeted at your main goal of pigmentation.
- The product is safe for your normal skin, with no risks of irritation due to the absence of harsh ingredients and the inclusion of soothing components.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/dark-spots): Average (this page)
- [Mature skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/mature-skin): High
- [Dry sensitive skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/dry-sensitive-skin): High
- [Oily acne-prone skin](https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/oily-acne-prone-skin): Average

## Key ingredients

Copper Tripeptide-1, Hexapeptide-11, Hexapeptide-9, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1

## What the research says

- Hexapeptide-11 activated proteasome, autophagy, chaperones, and antioxidant response genes, protected fibroblasts against oxidative-stress-mediated premature cellular senescence, and improved skin elasticity in human subjects. ([Redox Biology, 2015](https://pubmed.ncbi.nlm.nih.gov/25974626/))
- A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/))
- Adenosine-loaded dissolving microneedle patches showed similar or better efficacy on skin wrinkles, dermal density, elasticity, and hydration compared to adenosine cream in 22 female subjects. ([International Journal of Cosmetic Science, 2018](https://pubmed.ncbi.nlm.nih.gov/29574973/))
- Topical application of a disodium adenosine monophosphate-based formulation reduced wrinkles and hyperpigmentation while improving hydration, barrier function, skin lifting, and epidermal turnover in female participants. ([International Journal of Molecular Sciences, 2026](https://pubmed.ncbi.nlm.nih.gov/42278371/))
- Topical copper tripeptide complex on CO2 laser-resurfaced skin caused no significant reduction in erythema or objective improvement in wrinkles compared to controls, but significantly increased patient satisfaction regarding overall skin quality. ([Archives of Facial Plastic Surgery, 2006](https://pubmed.ncbi.nlm.nih.gov/16847171/))
- A novel regimen combining a hydroxy acid-based scrub and copper tripeptide serum significantly reduced adherent scalp flaking by 61.24%, increased hair density by 12.48%, increased hair thickness by 25.36%, and improved scalp skin hydration by 76.24% in adults with mild to moderate dandruff over 15 days. ([Cureus, 2024](https://pubmed.ncbi.nlm.nih.gov/39449909/))
- The combination of Thermus thermophilus and Bacillus subtilis mixed-culture ferment extract and copper tripeptide-1 GHK-Cu reduced inflammatory cytokines, protected skin explants from UV-induced damage, and improved wrinkles and skin barrier conditions compared to individual components or controls. ([Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/))
- Hexapeptide-11 reversibly downregulated ATM and p53 protein expression in intrinsically aged fibroblasts, extrinsically aged fibroblasts, and extrinsically aged dermal papillae cells at concentrations between 0.1% and 1.0% in vitro, thereby influencing the onset of cellular senescence. ([Journal of Cosmetic Science, 2013](https://pubmed.ncbi.nlm.nih.gov/23578831/))
- Topical treatment with cyclized hexapeptide-9 significantly reduced wrinkles and roughness in crow's feet and forehead compared to vehicle, and generally outperformed retinol in healthy volunteers with aging skin. ([Journal of Cosmetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/40586182/))
- A chemically synthesized homotrimeric collagen peptide exhibited high purity, a stable triple-helical conformation, and excellent thermal stability, while safely enhancing collagen and elastin synthesis in fibroblasts in vitro and increasing skin collagen content, improving skin structure, and enhancing microvessel density in BALB/c mice in vivo. ([Frontiers in Bioengineering and Biotechnology, 2025](https://pubmed.ncbi.nlm.nih.gov/40357327/))
- The addition of soybean peptide and collagen peptide to normal human dermal fibroblasts increased collagen synthesis and gene expression related to collagen formation, with the highest collagen levels observed when both peptides were added together compared to individual additions. ([International Journal of Food Sciences and Nutrition, 2012](https://pubmed.ncbi.nlm.nih.gov/22264122/))
- A multi-modal methodology combining MALDI-MSI, in vivo RCM, echography, and histology revealed age-related decreases in extracellular matrix and epidermal-dermal junction proteins and undulation depth, while a blend of palmitoyl oligopeptide and palmitoyl tetrapeptide-7 improved subepidermal low-echogenic band thickness, density, and extracellular matrix structure compared to placebo. ([Journal of Cosmetic Dermatology, 2015](https://pubmed.ncbi.nlm.nih.gov/25817264/))
- Chronomodulated daytime application of baicalin and nighttime application of palmitoyl tripeptide-1 synergistically improved skin luminance by 16.29%, nasolabial fold depth by -36.35%, and firmness by 24.35% in 30 female participants. ([Journal of Cosmetic Dermatology, 2026](https://pubmed.ncbi.nlm.nih.gov/41527525/))
- Palmitoyl tetrapeptide-7, acetyl hexapeptide-8, palmitoyl tripeptide-1, and palmitoyl tetrapeptide-10 significantly increased type III collagen levels in human dermal fibroblasts following UV exposure, with their combination demonstrating a greater effect in vitro and enhancing type I, III, and IV collagen levels in ex vivo skin tissues compared to individual components. ([International Journal of Cosmetic Science, 2026](https://pubmed.ncbi.nlm.nih.gov/42683869/))

## Why other serums fit skin with dark spots better

- Niacinamide significantly decreased hyperpigmentation and increased skin lightness compared with vehicle alone after 4 weeks of use in women by inhibiting melanosome transfer. ([The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/))
- Treatment with 14% ferulic acid and 12% l-ascorbic acid significantly reduced pigmentation and erythema while improving hydration and elasticity in 20 women with photoaged skin, with neither acid proving definitively more effective overall though ascorbic acid showed slightly greater skin lightening. ([Dermatologic Therapy, 2022](https://pubmed.ncbi.nlm.nih.gov/34877760/))

## What reviewers say

Based on a very large amount of data, users with diverse skin types consistently praise this serum for its lightweight hydration and ability to plump the skin without irritation. While it is not a miracle cure for deep wrinkles, the majority of users report smoother skin texture, improved elasticity, and a reduction in fine lines after consistent use.

- Liked: Lightweight & fast-absorbing (mostly mentioned)
- Liked: Gentle & non-irritating (often mentioned)
- Liked: Hydrating & plumping (often mentioned)
- Liked: Good value (sometimes noted)
- Disliked: Subtle or slow results (sometimes noted)
- Disliked: Consumed quickly (rarely noted)
- Disliked: Rare skin reactions (rarely noted)
- Disliked: Texture too watery (rarely noted)

## How to apply

- Apply this serum as part of your PM routine starting 3x/week and build up to daily use if your skin likes it.
- Place the serum after cleansing and toning, but before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and wait a minute for it to absorb.
- Apply the serum on dry skin to help fade pigmentation effectively.
- Avoid the eye area and always use SPF 30+ during the day.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does Mary & May 6 Peptide Complex Serum work for skin with dark spots?

This serum works for skin with dark spots, though other products fit it better because its peptides and glycerin mainly target firmness and general hydration rather than pigmentation. Skin with dark spots needs products containing effective antioxidants and soothing ingredients that provide significant benefits for dark spots without any risk of irritation.
Sources: [Redox Biology, 2015](https://pubmed.ncbi.nlm.nih.gov/25974626/), [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### Which ingredients make this serum a good fit for skin with dark spots?

This serum works for dark spots because it includes glycerin and adenosine, which provide general hydration and soothing effects that gently support your skin. To target dark spots even better, a treatment of this type needs effective antioxidants and soothing ingredients like niacinamide and propolis to brighten and even out your complexion.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [International Journal of Cosmetic Science, 2018](https://pubmed.ncbi.nlm.nih.gov/29574973/)

### What does Copper Tripeptide-1 do for skin with dark spots?

Copper Tripeptide-1 helps calm irritation and protects skin from UV-related damage that can lead to dark spots. When paired with specific ferment extracts, it helps improve overall tone and strengthens the skin barrier.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/)

### What does Hexapeptide-11 do for skin with dark spots?

Hexapeptide-11 helps protect skin against oxidative stress and aging, but it is not primarily known for fading dark spots. To effectively target dark spots, this skin type needs ingredients that help slow down melanin production and brighten tone, such as specialized peptides and depigmenting agents.
Sources: [Redox Biology, 2015](https://pubmed.ncbi.nlm.nih.gov/25974626/)

### Where does this serum go in a skincare routine for skin with dark spots?

This treatment goes in the evening routine after cleansing and toning, and before moisturizing. Skin with dark spots needs products that contain targeted brightening ingredients to effectively address pigmentation.

### Can I use this serum with retinol, and in what order?

You can use this serum with retinol by applying the serum first to give your skin hydration and firming benefits, followed by your retinol. This product is safe for your skin and is unlikely to cause irritation due to its gentle and soothing ingredients.

### How often should I use this serum?

You can use this treatment in the evening as part of your routine. Skincare for dark spots of this type needs targeted brightening ingredients like vitamin C, niacinamide, or alpha arbutin.

### Can this serum clog pores, cause breakouts or purging for skin with dark spots?

This serum is unlikely to clog pores or cause breakouts on your skin with dark spots, as it has a very gentle formula without heavy, pore-clogging ingredients. To effectively target dark spots, this skin type needs brightening ingredients like vitamin C, niacinamide, or alpha arbutin.

### Is this serum fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for skin with dark spots

- [Paula's Choice RESIST Super Antioxidant Concentrate Serum](https://lovi.care/skincare/p/paula-s-choice/resist-super-antioxidant-concentrate-serum/for/dark-spots) — Superior fit — $53.00 at Amazon
- [AMOREPACIFIC Time Response Skin Reserve Serum](https://lovi.care/skincare/p/amorepacific/time-response-skin-reserve-serum/for/dark-spots) — Superior fit — $525.00 at Amazon
- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/dark-spots) — High fit — $16.75 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/p/cerave/foaming-facial-cleanser/for/dark-spots) — Superior fit — $15.97 at Amazon
- Hydrating Toner: [Pyunkang Yul Calming Deep Moisture Toner](https://lovi.care/skincare/p/pyunkang-yul/calming-deep-moisture-toner/for/dark-spots) — Superior fit — $16.99 at Amazon
- Moisturizer: [Isntree Green Tea Fresh Serum](https://lovi.care/skincare/p/isntree/green-tea-fresh-serum/for/dark-spots) — Superior fit — $17.90 at Amazon

## Where to buy

- Amazon.com: $19.44 (https://www.amazon.com/dp/B095YHYF33?tag=lovi-care-web-product-20&linkCode=osi&th=1&psc=1)
Prices checked 5 Nov 2026.

## Ingredients

Water, Glycereth-26, 1,2-Hexanediol, Butylene Glycol, Glycerin, Arginine, Carbomer, Ethylhexylglycerin, Polyglyceryl-10 Laurate, Adenosine, Caprylyl Glycol, Copper Tripeptide-1, Hexapeptide-11, Hexapeptide-9, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Tripeptide-1
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/mary-and-may/6-peptide-complex-serum/for/dark-spots (this page)
- United Kingdom: https://lovi.care/skincare/uk/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Ireland: https://lovi.care/skincare/ie/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Germany: https://lovi.care/skincare/de/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- France: https://lovi.care/skincare/fr/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Italy: https://lovi.care/skincare/it/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Netherlands: https://lovi.care/skincare/nl/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Spain: https://lovi.care/skincare/es/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Canada: https://lovi.care/skincare/ca/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Australia: https://lovi.care/skincare/au/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Singapore: https://lovi.care/skincare/sg/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- Saudi Arabia: https://lovi.care/skincare/sa/p/mary-and-may/6-peptide-complex-serum/for/dark-spots
- United Arab Emirates: https://lovi.care/skincare/ae/p/mary-and-may/6-peptide-complex-serum/for/dark-spots