Peter Thomas Roth FIRMx Collagen Serum, 1 fl. oz.
Peter Thomas Roth FIRMx Collagen Serum, 1 fl. oz.
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This serum has a lightweight, fast-absorbing texture with collagen and fatty acids as key ingredients. Peter Thomas Roth formulated FIRMx to be applied once or twice daily to clean skin, typically before moisturiser.
The 1 fl. oz. bottle suits regular use in a daily skincare routine. As with any serum, results depend on consistent application over time. Suitable for most skin types seeking a collagen-based treatment.
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Worth every penny
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My go-to foundation
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Luxury feel
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