You own a company selling vitamins and aminoacids. You decided to develop a new formula to treat acne, wrinkles, and you also promise to treat baldness. You plan to use the following:

Question

BlackTom AI · Accepted Answer

Vitamin A reduces sebum production and normalizes follicular keratinization, so it is effective against acne and, as a retinoid, stimulates collagen remodeling to reduce wrinkles.

1) Relevant knowledge points and concepts
- Vitamin A (retinoids): decreases sebum, reduces comedone formation, and stimulates dermal collagen synthesis — useful for acne and wrinkles.
- Vitamin E: lipid‑soluble antioxidant protecting cell membranes from free radical damage, supports skin repair and potentiates anti‑aging effects when combined with vitamin A.
- Cysteine: a sulfur‑containing amino acid and major component of keratin; cysteine residues form disulfide bonds that give hair strength and structure, so supplying cysteine supports hair growth/structure and can help with certain forms of hair loss.
- Other options: B1, tyrosine, glutamic acid, arginine, vitamin C have distinct roles but do not collectively address acne + wrinkles + hair keratin synthesis as directly.

2) Step‑by‑step reasoning
- For acne: need an agent that normalizes follicular epithelium and reduces sebum → vitamin A (retinoid activity) is primary.
- For wrinkles: need stimulation of collagen synthesis and antioxidant protection → vitamin A stimulates remodeling; vitamin E reduces oxidative damage and synergizes.
- For baldness: need provision/precursors for keratin synthesis and disulfide bond formation → cysteine supplies sulfur for keratin, directly relevant to hair strength/growth.

3) Intermediate logical steps (no numeric calculation required)
- Select agents that each target one of the three issues: acne (A), wrinkles (A + E), baldness (cysteine).
- Confirm synergy: A + E addresses skin aging; cysteine addresses hair protein structure. Together they cover all three targets.

4) Why the correct answer is correct
- Option a (vitamin A + vitamin E + cysteine) includes a retinoid (A) for acne/wrinkle remodeling, an antioxidant (E) for anti‑aging, and a keratin precursor (cysteine) for hair — directly matching the three promised effects.

5) Why other options are incorrect
- b (vitamin B1 + tyrosine + glutamic acid): B1 is not a primary acne/anti‑wrinkle agent; tyrosine/glutamate do not supply keratin sulfur.
- d (vitamin C + vitamin E + vitamin A): good for skin but lacks a sulfur amino acid for keratin formation, so unlikely to treat baldness effectively.
- c (vitamin E + arginine + tyrosine + glutamic acid): arginine may aid circulation but does not provide the cysteine/keratin building blocks; tyrosine/glutamate don’t address acne or keratin synthesis sufficiently.

6) Conclusion
Option a (vitamin A + vitamin E + cysteine) is the correct choice and matches the provided answer.

You own a company selling vitamins and aminoacids. You decided to develop a new formula to treat acne, wrinkles, and you also promise to treat baldness. You plan to use the following:Single choice

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