Growth Factors vs Vitamin E

Growth Factors: Sold in creams for photoaging; evidence is specific to particular products. Vitamin E: Adds antioxidant and emollient functions to skincare; it is not a proven scar treatment.

Research updated 2026-10-25

Five growth factor serums lined up on white, including MUMUK, DRMTLGY, PEPFACTOR, E.G.F. and Allies of Skin

Four vitamin E oil bottles lined up on white, two amber dropper bottles and two clear yellow oils

Which one?At a glance What it helps Diagrams Using both Strengths Results Safety How it works Products Questions

Which one is right for you?

Choose Growth Factors if…

Consider only as an optional cosmetic; independent evidence is limited.

Optional anti-aging step
You accept limited independent evidence
Intact, non-irritated skin

Choose Vitamin E if…

Choose for formula preference, rather than expecting scars to disappear.

Dry skin
Paired with vitamin C
Not on fresh surgical wounds

Fine together

Can you use both?

A gentle pairing that layers easily.

At a glance

● Growth Factors

● Vitamin E

Type

Protein signalling ingredient family

Fat-soluble antioxidant family

What it does

Sold in creams for photoaging; evidence is specific to particular products.

Adds antioxidant and emollient functions to skincare; it is not a proven scar treatment.

Best for

Wrinkles and Fine Lines

Dry Skin

Studied concentrations

No standardized strength; the identity and mixture of proteins vary.

1% alpha-tocopherol in the cited C/E/ferulic combination study.

When to use

Morning or night, as directed by the finished product.

Time to results

Often 8–12 weeks in small cosmetic studies; results may be subtle

Irritation

May irritate; use only as directed on intact skin.

Can cause contact dermatitis; avoid applying capsule contents to healing surgical wounds.

Sensitive skin

Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.

Available

Cosmetic or OTC products; some high-strength procedures are separate treatments.

What it helps

Compare uses by strength of evidence. Evidence level describes confidence in a benefit, not its size.

Evidence level

Growth Factors

Vitamin E

Limited evidenceEarly or small studies

A relaxed forehead with faint shallow horizontal fine lines.

Wrinkles and Fine Lines

A small uncontrolled pilot reported improvement with a mixed growth-factor gel.

The front of one shin on pale skin. The surface is pink with fine white flaking and a few shallow cracks, and the skin around it is even in tone.

Dry Skin

Can contribute to an emollient formula; independent clinical benefit is less clear.

Insufficient evidence

Sagging Skin

The cited pilot does not establish clinically meaningful lifting.

Acne

The reviewed sources do not establish this ingredient as a treatment for this concern.

Flat tan patches with soft irregular edges across the forehead and upper cheek of an adult with light skin, the surface completely smooth.

Melasma

The reviewed sources do not establish this ingredient as a treatment for this concern.

Wrinkles and Fine Lines

The cited studies do not establish wrinkle correction from vitamin E alone.

Acne

The reviewed sources do not establish this ingredient as a treatment for this concern.

Scars

A controlled surgical-scar study found no improvement and reported dermatitis.

Two areas of fair skin side by side on a hip. New pink-red bands sit above, and older flat silvery-white bands below, with only a small difference in color between the pale marks and the skin around them.

Stretch Marks

The reviewed sources do not establish this ingredient as a treatment for this concern.

How it works

Growth Factors mechanism diagram. Signals can influence cells: Growth factors interact with specific receptors. Intact skin limits delivery: Large proteins may not reach deeper targets. — Open full-size diagram
Diagram explanation and sources
Signals can influence cells: Growth factors interact with specific receptors. Intact skin limits delivery: Large proteins may not reach deeper targets.
Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation. Some illustrated pathways are experimental; laboratory findings do not establish a clinical treatment benefit.
Source 1

Vitamin E mechanism diagram. Acts in lipid environments: Tocopherol can interrupt lipid oxidation. Depends on the formula: It is often studied with other antioxidants. — Open full-size diagram
Diagram explanation and sources
Acts in lipid environments: Tocopherol can interrupt lipid oxidation. Depends on the formula: It is often studied with other antioxidants.
Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation.
Source 1 · Source 2

Using both in one routine

Built from where each one usually sits in a routine. Introduce one at a time.

Morning

Step 1

Cleanser

Step 2

Growth FactorsMorning or night

Step 3

Vitamin EMorning or night

Step 4

Sunscreen

Night

Step 1

Cleanser

Step 2

Growth FactorsMorning or night

Step 3

Vitamin EMorning or night

Strengths and forms

Concentrations

Growth factors include different signaling proteins and mixtures. A percentage of conditioned media or a supplier complex does not specify the amount or activity of each growth factor.

Choosing a strength: Look for identification of the growth factors and clinical evidence for the exact finished formula.

Higher strengths: There is no established universal cosmetic percentage or proof that a higher blend percentage produces better results.

Formula matters: Early human studies of particular growth-factor preparations do not validate every growth-factor serum or delivery method.

There is no established best vitamin E percentage for scars or aging skin. A human antioxidant study used 1% alpha-tocopherol in a vitamin C/ferulic acid combination.

Studied antioxidant combination

Alpha-tocopherol used with other antioxidants. This does not establish an ideal stand-alone vitamin E concentration.

Choosing a strength: Choose for the finished moisturizer or antioxidant formula. Alpha-tocopherol and tocopheryl acetate are not identical ingredients.

Higher strengths: Concentrated vitamin E is not a proven better scar treatment. A small surgical-scar study found no cosmetic advantage and reported contact reactions.

Formula matters: The vitamin E form, oil base and companion ingredients matter. An oral capsule emptied onto skin is not equivalent to a tested topical formulation.

Forms

Serum · Cream

Vitamin C serum · Cream · Oil

When you’ll see results

Approximate windows, not promises.

● Growth Factors

● Vitamin E

First few weeks

First few weeksAssess tolerance and texture; immediate softness can come from the base formula.

4–8 weeks

4–8 weeksSubtle changes may appear in some tested products; evidence varies.

8–12 weeks

8–12 weeksCompare photographs in the same lighting and reassess benefit.

3–6 months

3–6 monthsPhotoaging trials often need several months; expect modest rather than dramatic change.

6–12 months

6–12 monthsLong-term evidence is limited for many cosmetic actives; continue only if useful.

Safety and sensitive skin

Common reactions

May irritate; use only as directed on intact skin.

Can cause contact dermatitis; avoid applying capsule contents to healing surgical wounds.

When to stop

Stop for persistent burning, swelling, blistering or a new rash. Seek urgent care for breathing difficulty or a severe allergic reaction.

Sensitive or inflamed skin

Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.

Important limits

Do not use a cosmetic product as a substitute for diagnosis of an unexplained, changing or persistent skin problem.

Pregnancy

Data are limited and these are usually paused in pregnancy; ask the clinician managing your pregnancy.

There is no good evidence that it prevents them. Stretch marks form deeper than a cream reaches. Ask the doctor managing your pregnancy before starting anything new.

How it works

In the skin

On the skin. The finished product delivers growth factors in a particular vehicle.

Entering skin. No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.

Conversion. No activation step is established as necessary for its intended topical role.

Skin response. Growth factors influence cell signalling, but passage of large proteins through intact skin is a delivery challenge.

Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.

On the skin. The finished product delivers vitamin e in a particular vehicle.

Entering skin. Below the 500 Da guideline; delivery still depends on the formula, solubility, stability and skin condition. Size does not prove effectiveness or penetration depth.

Conversion. No activation step is established as necessary for its intended topical role.

Skin response. Tocopherols help limit lipid oxidation; a moisturizer or antioxidant combination has effects beyond vitamin E alone.

Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.

Getting in

No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.

Below the 500 Da guideline; delivery still depends on the formula, solubility, stability and skin condition. Size does not prove effectiveness or penetration depth.

Product examples

Growth Factors

Cosrx Peptide Serum — Six peptides plus niacinamide, 150 ml for around $20. Good value — the niacinamide does more work than the peptides.

Vitamin E

COSRX The Retinol 0.1 Cream

Common questions

Growth Factors:What should I choose growth factors for?

Consider only as an optional cosmetic; independent evidence is limited.

Growth Factors:How strong is the evidence?

An uncontrolled 14-person pilot tested eight growth factors together for 60 days. Without a vehicle control, it cannot separate the formula, natural variation and growth-factor effects.

Vitamin E:What should I choose vitamin e for?

Choose for formula preference, rather than expecting scars to disappear.

Vitamin E:How strong is the evidence?

A small controlled scar study found no cosmetic benefit and frequent dermatitis. A separate UV study tested vitamins C and E with ferulic acid, so its results cannot be assigned to vitamin E alone.

Sources