Medik8 Liquid Peptides Advanced MP Dupes & Cheaper Alternatives
From 18 Reddit threads · Updated October 8, 2026
30% multi-peptide serum for plumper-looking, smoother skin; pricey but a holy grail. The catch: expensive for a serum most people treat as extra, not essential. Here's what Redditors reach for instead.
The short answer
Best Overall AlternativeWatery first-step layer · $20.00 · 150 ml
Best Cheaper AlternativeWatery, lightweight texture · $9.70 · 30 ml vs $95.00 for the original
Same Active: PeptidesPeptides plus copper for long-game aging support
#1
Best Overall Alternative
- Size: 150 ml
- Price per ml: $0.13/ml (original $3.21/ml)
The why
One minus
Can break out acne-prone skin
Good forDry Skin, Sensitive Skin
Both recommended for Anti-Aging.
“My morning routine is just Cosrx 6 Peptide booster serum”
— Reddit, r/koreanskincare
The original, at a glance
- Why people love it
- 30% multi-peptide complex with copper peptides
- Price
- $95.00 · 29.6 ml · $3.21/ml
#2
Best Cheaper Alternative
- Key actives: Argireline Solution 10%
- Size: 30 ml
- Price per ml: $0.32/ml (original $3.21/ml)
The why
A watery peptide serum that people use on forehead, 11s, and crow’s feet. It suits folks chasing temporary softening or a stopgap before Botox. Don’t expect permanent wrinkle reversal, and some users break out.
One minus
Results are mostly temporary, not lasting
Both recommended for Anti-Aging.
“I use the ordinary matrixyl and argireline under my frownies and find that the combo works really well for my fine lines.”
— Reddit, r/SkincareAddiction
#3
Same Active: Peptides
Multi-Peptide + Copper Peptides 1% Serum
The Ordinary·Serum
See alternativesPeptides plus copper for long-game aging support
- Key actives: Copper Peptides 1%
The why
A peptide-and-copper serum that people slot into AM or recovery routines for fine lines, elasticity, and extra hydration. It suits patients who can wait months for subtle changes. Watch for pilling, texture weirdness, and irritation with tret or acids.
One minus
Results are glacial — plenty of people see nothing after a bottle
Both recommended for Anti-Aging.
“Peptides - Copper Peptides especially are a fantastic way of brightening, healing the skin barrier, boosts collagen etc.”
— Reddit, r/tretinoin
#4
Best for Anti-Aging
- Size: 50 ml
- Price per ml: $0.69/ml (original $3.21/ml)
The why
A niacinamide and spicule treatment that Redditors use for acne, texture, and glow. Studies found niacinamide helps acne, and the thread agrees on visible smoothing. Sensitive skin, rosacea, and barrier-wrecked routines often hate the prickly feel.
One minus
Spicules sting, burn, and can wreck a barrier
Both recommended for Anti-Aging.
“Basically you want to think of it as your “step zero” — it kind of acts as a mini micro-needling treatment so it’s going to help with the absorption of whatever you put on top.”
— Reddit, r/koreanskincare
Other alternatives worth a look
Growth-factor heavy anti-aging serum · 35 mentions
Dry SkinSensitive Skin
Peptide stack with copper tripeptide-1 · 10 mentions
OG 15% L-ascorbic acid antioxidant trio · 150 mentions
Sensitive SkinDewy Finish
Strong OTC retinol for acne and aging · 83 mentions
Oily SkinGentle
Dewy hydration and plumper-looking skin · 82 mentions
Combination SkinDry Skin
Browse more
Reddit's best serums by concern
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