Date published: 2026-5-16

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KRTAP4-4 Activators

Vitamin A and Retinoic Acid, all trans, derivatives of Vitamin A, exert their influence by engaging with nuclear receptors to modulate gene expression, thereby setting the stage for the synthesis of keratin proteins. 1-Hydroxypyridine-2-thione zinc salt contributes to this process by bolstering the health of hair follicles, creating a nurturing ground for hair protein to flourish. Minoxidil, recognized for its role in hair growth, extends the active growth phase of hair follicles, an action that is likely to upregulate the production of keratin proteins such as KRTAP4-4. Cysteamine HCl offers a more foundational approach by supplying the sulfhydryl groups necessary for the construction of hair's protein structure. Similarly, Copper Peptide, known as GHK-Cu, is believed to encourage follicle enlargement and hair growth, indirectly fostering an environment ripe for keratin protein synthesis.

Selenium Sulfide's contribution to scalp health indirectly supports the infrastructure necessary for keratin protein synthesis. Epigallocatechin Gallate and Azelaic Acid both have roles in promoting favorable conditions for hair health, which are likely to aid in the optimal expression of hair-specific proteins. Procapil's ability to enhance blood flow to the hair follicles underscores its indirect support for hair protein synthesis by ensuring the delivery of nutrients and oxygen critical for hair growth. Adenosine's mechanism of prolonging the anagen phase aligns with a context that favors increased keratin protein production. L-Carnitine L-Tartrate, as an energy enhancer for hair follicles, ensures that the energy-dependent process of protein synthesis proceeds without hindrance.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Vitamin A

68-26-8sc-280187
sc-280187A
1 g
10 g
$385.00
$2654.00
(2)

Retinol can regulate gene expression through retinoic acid receptors, influencing keratin gene expression.

Zinc

7440-66-6sc-213177
100 g
$48.00
(0)

Zinc Pyrithione can enhance the health of hair follicles, indirectly supporting keratin protein synthesis.

Minoxidil (U-10858)

38304-91-5sc-200984
sc-200984A
100 mg
1 g
$69.00
$351.00
(0)

Minoxidil can prolong the anagen phase of hair growth, potentially increasing keratin protein expression.

Cysteamine

60-23-1sc-217991
sc-217991A
sc-217991B
5 g
25 g
50 g
$89.00
$238.00
$442.00
1
(1)

Cysteamine can contribute to the synthesis of hair proteins by providing sulfhydryl groups.

Selenium

7782-49-2sc-250973
50 g
$62.00
1
(1)

Selenium Sulfide can aid in maintaining scalp health, indirectly influencing keratin expression.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

EGCG can affect cell proliferation and differentiation, pathways relevant to keratin expression.

Azelaic acid

123-99-9sc-257106
25 g
$42.00
(0)

Azelaic Acid can promote hair health by improving follicle environment, indirectly influencing keratin expression.

Adenosine

58-61-7sc-291838
sc-291838A
sc-291838B
sc-291838C
sc-291838D
sc-291838E
sc-291838F
1 g
5 g
100 g
250 g
1 kg
5 kg
10 kg
$34.00
$48.00
$300.00
$572.00
$1040.00
$2601.00
$4682.00
1
(0)

Adenosine can increase the anagen phase duration, potentially leading to increased keratin expression.

Retinoic Acid, all trans

302-79-4sc-200898
sc-200898A
sc-200898B
sc-200898C
500 mg
5 g
10 g
100 g
$66.00
$325.00
$587.00
$1018.00
28
(1)

Tretinoin, like Retinol, can influence gene expression, affecting keratin and other hair-specific proteins.