AGeek & GorgeousThe brand directs use of 3–5 drops after cleansing and liquid or gel products, before creams, in the morning and/or evening. Follow its full current directions.Manufacturer directions, not a personalized routine.
BThe OrdinaryThe brand directs a few drops in the morning and evening, on unbroken skin, and advises patch testing. Read its current compatibility exclusions before combining with other products.Manufacturer directions, not a personalized routine.
Price & value
Recorded price
AGeek & Gorgeous$18.80 USDPrice recorded Excludes tax and shipping.
BThe Ordinary$19.90 USDPrice recorded Excludes tax and shipping.
Price per mL
AGeek & Gorgeous$0.63 / mL
BThe Ordinary$0.66 / mL
What it contains and what it means
Peptides, explained
Peptides are small chains of the building blocks used in proteins. Their names identify ingredients, not quality scores. Open an explanation to learn what each one means.
AGeek & Gorgeous
Tetrapeptide-21
A peptide identified by the brand as part of TEGO PEP 4-17.
Selected label peptides, not the complete INCI list. Other peptides and non-peptide ingredients may be omitted. See the manufacturer for the full formula.
BThe Ordinary
Acetyl Hexapeptide-8
A peptide studied for the appearance of expression lines around the eyes.
Selected label peptides, not the complete INCI list. Other peptides and non-peptide ingredients may be omitted. See the manufacturer for the full formula.
How much of each ingredient?
A formula is the whole mix. A blend percentage does not tell us the amount of every ingredient.
AGeek & GorgeousThe disclosed percentages refer to named ingredient complexes. They do not state the pure amount of every peptide and cannot rank the serum’s strength.Manufacturer disclosure; not independently measured.
BThe OrdinarySeveral peptides are listed, but their separate amounts are not disclosed. HA means hyaluronic acid; it is not another peptide.Manufacturer disclosure; not independently measured.
Different names do not tell us which serum works better.
Some selected ingredient names match, but amounts and the rest of each formula may differ. Open an ingredient explanation to see its intended use and the kind of evidence behind it.
Check the whole product for precautions.
An ingredient name cannot predict your skin’s reaction. Cosmetics can cause irritation or allergic reactions. Check the complete label and follow the product directions.
Studies of an ingredient, supplier descriptions and brand claims answer different questions. We have not recorded an independent head-to-head study of these two serums. Lower cost per mL does not establish better results.
Go a little deeper.
Open the questions that matter to you.
Price & sizeCompare the same amount, not just the bottle price.
Recorded price
AGeek & Gorgeous$18.8030 mLUSD · Recorded 2026-10-19
BThe Ordinary$19.9030 mLUSD · Recorded 2026-10-19
Cost for the same amount
AGeek & Gorgeous$0.63 / mL$18.53 / US fl oz
BThe Ordinary$0.66 / mL$19.62 / US fl oz
Prices are dated observations, excluding tax and shipping. Stock and current checkout prices are not verified. One US fl oz equals 29.5735295625 mL.
We match the written ingredient name, ignoring letter case. We do not merge differently named chemical forms. The same name does not establish the same concentration, delivery, or effect.
Selected label peptides, not the complete INCI list. Other peptides and non-peptide ingredients may be omitted. See the manufacturer for the full formula.
How much is in the formula?What the brands disclose, without filling in the blanks.
What the brand tells us
AGeek & Gorgeous
The brand states 3% Matrixyl 3000, 2% Matrixyl synthe’6, 4% TEGO PEP 4-17 and 0.001% X50 Antiaging. These are commercial-complex disclosures, not separate pure-peptide concentrations.
BThe Ordinary
Individual percentages of the selected peptides are not disclosed on the recorded label.
A disclosed blend percentage does not automatically establish every ingredient’s concentration. These are brand disclosures, not independent laboratory measurements.
Sources & missing informationFollow the facts and see what remains unverified.