Mary&may 30 ml
Mary&May's 30ml format is where the brand concentrates its active-ingredient serums. The 16+ in-stock options here include targeted treatments built around specific actives: 6 Peptide Complex, Houttuynia Cordata Tea Tree, Hyaluronics, Marine Collagen, Centella Asiatica, Niacinamide Chaenomeles Sinensis, Idebenone Blackberry Complex, Tranexamic Acid Glutathion Eye Cream, Centripetal Extract, and Hyaluronic Acid Low Molecular. Each 30ml bottle is a single-active or active-blend treatment that fits between toner and moisturizer in a layered routine.
By Skinsli editorial Updated
Buying guide
Mary&May 30ml Serums: Every Active, What It Does, and How to Pick
Mary&May's 30ml serum line covers ten distinct active-ingredient targets in a consistent dropper-bottle format. Each bottle is built around one specific concern - hydration, brightening, repair, barrier support, blemishes, anti-aging, or eye-area treatment - so you can select exactly the active your skin needs without buying a multi-step kit. The 16+ options in stock on skinsli span peptide complexes, plant extracts, acids, antioxidants, and collagen sources.
Why 30ml is the standard serum format for Mary&May
The 30ml size is a deliberate choice in the Mary&May lineup. At once-daily use, a 30ml serum typically lasts 2 to 3 months, which is the minimum duration needed to evaluate whether an active produces visible improvement. It is also a compact size for travel or for holding multiple serums on a bathroom shelf without clutter. The consistent bottle format across all actives makes it easy to identify and layer different serums.
Within the 30ml format, Mary&May differentiates by active and by target zone. Most of the 30ml products here are facial serums used on the full face; the Tranexamic Acid Glutathion Eye Cream 30ml is the exception, targeting the thinner, more delicate eye-area skin specifically.
The hydration-focused 30ml serums: Hyaluronics and Hyaluronic Acid Low Molecular
The Hyaluronics Serum 30ml uses a blend of hyaluronic acid molecular weights to address hydration at different skin depths. The Hyaluronic Acid Low Molecular Serum 30ml focuses specifically on low-molecular-weight HA, which penetrates deeper into the epidermis than standard HA. Low-molecular-weight HA is typically more effective for plumping fine lines that are caused by dehydration rather than volume loss.
Both serums suit all skin types, including oily and combination skin that still needs hydration without a heavy moisturizer. Apply after toner on damp or dry skin, then follow with a moisturizer to seal in the hydration the HA draws in.
Brightening serums: Niacinamide Chaenomeles Sinensis and Tranexamic Acid Glutathion Eye Cream
The Niacinamide Chaenomeles Sinensis Serum 30ml targets uneven skin tone. Niacinamide (vitamin B3) reduces the transfer of melanin to surface skin cells, which fades dark spots and improves overall tone clarity over time. Chaenomeles sinensis (Japanese quince) extract adds antioxidant support alongside the niacinamide.
The Tranexamic Acid Glutathion Eye Cream 30ml is targeted at the eye area, where dark circles and post-inflammatory hyperpigmentation are common concerns. Tranexamic acid inhibits melanin synthesis; glutathione (an antioxidant) helps prevent oxidative pigmentation. Apply a small amount with ring finger around the orbital bone, starting from the inner corner outward.
Barrier and soothing serums: Centella Asiatica and Houttuynia Cordata Tea Tree
The Centella Asiatica Serum 30ml and the Centripetal Extract Serum 30ml both use centella as the primary active. Centella asiatica stimulates collagen production and reduces inflammation, making it effective for active acne, post-acne redness, and sensitized skin after exfoliation. The Centripetal Extract version emphasizes the centella extract in a slightly different formulation base.
The Houttuynia Cordata Tea Tree Serum 30ml combines two traditionally used antibacterial plants. Houttuynia cordata (fish mint) is a Korean botanical with anti-inflammatory and pore-purifying properties. Tea tree oil reinforces its blemish-control effect. This serum is best suited to oily or blemish-prone skin that wants plant-based active-treatment without the harshness of a strong acid.
Anti-aging and firming serums: 6 Peptide Complex, Marine Collagen, and Idebenone
The 6 Peptide Complex Serum 30ml delivers six distinct peptide types, each targeting a different aspect of skin firmness: signal peptides that prompt collagen synthesis, carrier peptides that transport trace minerals, and neurotransmitter-inhibiting peptides that relax muscle-induced lines. Using multiple peptide types in one serum addresses aging from several angles simultaneously.
The Marine Collagen Serum 30ml uses collagen sourced from marine organisms, which produces smaller peptide fragments than bovine collagen and so penetrates the skin surface more effectively. The Idebenone Blackberry Complex Serum 30ml brings together idebenone - a potent synthetic antioxidant more stable than CoQ10 - with blackberry extract for radical-scavenging and pollution-defense support.
Layering multiple Mary&May 30ml serums in one routine
Mary&May's 30ml format is designed to be layered. A common pairing: a hydration serum (Hyaluronics or Hyaluronic Acid Low Molecular) as the first serum layer for water-binding, followed by a targeted active (Centella, Niacinamide, Peptide, or Idebenone) as the second layer. Apply thinner, more watery serums first; thicker, more viscous serums go on after.
At night, the repair and anti-aging serums (Peptide Complex, Marine Collagen, Idebenone) are best used because cellular repair processes peak during sleep. In the morning, a hydration serum under SPF is practical and avoids photosensitive actives. Do not layer more than three serums at once - diminishing returns increase, and the risk of pilling or irritation rises with more layers.
Matching actives to skin types and concerns
Oily and blemish-prone skin benefits most from the Houttuynia Cordata Tea Tree Serum and the Centella Asiatica Serum. Both are lightweight and control sebum and inflammation without adding richness that can clog pores. The Niacinamide Chaenomeles Sinensis Serum works well for this type too, addressing the post-acne marks that commonly follow breakouts.
Dry and dehydrated skin responds well to the Hyaluronics Serum, the Hyaluronic Acid Low Molecular Serum, and the Marine Collagen Serum for moisture, followed by a richer moisturizer. Aging-focused skin should consider the 6 Peptide Complex as the primary active, optionally layered with the Idebenone Blackberry Complex for antioxidant reinforcement. Dark circles or under-eye pigmentation respond to the Tranexamic Acid Glutathion Eye Cream applied consistently over 4 to 8 weeks.
Mary&May on skinsli: sourcing and what to expect
Mary&May products on skinsli are sourced through verified Korean distribution and ship from the US. The brand manufactures in Korea and its serums are a direct import from the Korean domestic market. Batch codes on each bottle confirm production date and shelf life. Products arrive with Korean and English labeling.
The 30ml size is consistent across all serums in this collection, but packaging details such as dropper vs. pump and box color vary by formulation. Check the product page image for the specific variant you plan to order.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
Can the Mary&May 6 Peptide Complex Serum 30ml be used daily?
Yes. The 6 Peptide Complex Serum is a daily-use serum. Peptides do not cause sensitivity or photosensitivity, so it is safe morning and evening. For firmness and line-reduction goals, consistent daily use over 4 to 8 weeks produces the most noticeable results. Apply after toner and before moisturizer.
What is the difference between the Mary&May Hyaluronics Serum 30ml and the Hyaluronic Acid Low Molecular Serum 30ml?
The Hyaluronics Serum uses a blend of high and low molecular weight HA that addresses surface hydration and deeper layer moisture at the same time. The Hyaluronic Acid Low Molecular Serum focuses exclusively on low-molecular-weight HA, which penetrates deeper than standard HA and is more targeted for fine lines caused by dehydration. If you want a broad hydration effect, the Hyaluronics Serum is the more versatile choice. If you are targeting hydration-driven fine lines specifically, the Low Molecular version is more direct.
Is the Mary&May Centella Asiatica Serum 30ml effective for active acne?
The Centella Asiatica Serum 30ml is effective for calming inflammation around active breakouts and supporting the skin during recovery. Centella asiatica reduces redness and speeds barrier repair after spots have started to heal. It is not a direct acne treatment in the sense of an antibacterial agent - for blemish-control alongside centella, the Houttuynia Cordata Tea Tree Serum adds antibacterial plant actives. Both can be layered if needed.
How long does the Mary&May Tranexamic Acid Glutathion Eye Cream 30ml take to reduce dark circles?
Results from tranexamic acid on dark circles typically show after 4 to 8 weeks of consistent daily use. Tranexamic acid inhibits melanin synthesis gradually; it does not bleach or remove existing pigment overnight. Apply a small amount with your ring finger around the orbital bone morning and evening. Glutathione reinforces the antioxidant defense that prevents pigmentation from worsening. Results vary depending on the cause of the dark circles - pigmentation-based circles respond better than vascular or structural shadows.
What makes idebenone in the Mary&May Idebenone Blackberry Complex Serum 30ml different from vitamin C or niacinamide?
Idebenone is a synthetic antioxidant with higher stability and antioxidant capacity than vitamin C in standard formulations. It does not oxidize and turn yellow in the bottle, and it is less likely to cause the irritation or flushing that high-concentration vitamin C can trigger on sensitive skin. Niacinamide targets melanin transfer specifically for brightening; idebenone targets free radical damage from UV and pollution, which prevents the skin aging and discoloration that free radicals cause over time. The two actives work on different mechanisms and can be layered.
What percentage of niacinamide is in the Mary&May Niacinamide Chaenomeles Sinensis Serum 30ml?
The specific percentage is listed on the product's full ingredient declaration on the product page. Mary&May typically formulates its niacinamide products at concentrations effective for brightening without causing the flushing that can occur at very high percentages. Check the ingredient list on the product page to confirm the exact concentration before ordering.
Should I use the Marine Collagen Serum 30ml or the 6 Peptide Complex Serum for anti-aging?
Both target skin firmness but through different mechanisms. The Marine Collagen Serum 30ml delivers collagen peptide fragments that support the skin's structural matrix and moisture content. The 6 Peptide Complex Serum contains signal peptides that prompt the skin's own collagen-producing cells to increase output, alongside peptides targeting relaxation of muscle-induced lines. For plumping and moisture, start with Marine Collagen. For signal-based firming and line treatment, use the Peptide Complex. Layering both (Marine Collagen first, thinner; Peptide Complex second) addresses both pathways.
Is the Houttuynia Cordata Tea Tree Serum 30ml suitable for very oily skin without a moisturizer?
The Houttuynia Cordata Tea Tree Serum can be used without a moisturizer on oily skin if your skin does not feel dry after application. The serum itself is lightweight. However, skipping moisturizer entirely often leads to the skin overproducing sebum to compensate for barrier stress. A light, gel-based moisturizer after the serum gives better long-term results for oily skin than skipping it entirely.
Do Mary&May 30ml serums ship from the US on skinsli?
Yes. Mary&May products on skinsli ship from the US, which reduces delivery time compared to direct-from-Korea orders. Each 30ml bottle comes with Korean and English labeling and a batch code. The 16+ in-stock options are listed with real-time stock status on their individual product pages.



























