Tallow
ChemicalSubstanceRendered beef fat with a saturated and monounsaturated fatty acid profile compositionally similar to the free fatty acid fraction of healthy stratum corneum.
The Lab
Where beauty meets biology
The Science Library
16 entities found starting with T Clear filters
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Telogen
BiologicalProcessHair resting phase lasting 2-4 months; normally only 10-15% of follicles are in this pre-shedding state at any time.
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Telogen effluvium
MedicalConditionA reactive hair loss condition in which a significant proportion of scalp follicles are simultaneously shifted into the resting phase by a systemic stressor.
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Testosterone
MolecularEntityPrimary androgen hormone affecting hair follicles, with elevated free testosterone contributing to androgenetic hair loss.
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Thulium Fractional Laser
MedicalTherapyGentle fractional laser using 1927nm wavelength, treating photoaging, dyspigmentation, acne scarring, and non-facial photodamage whilst restoring barrier lipid synthesis pathways
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Thymic stromal lymphopoietin
ProteinA keratinocyte‑derived alarmin that translates barrier disruption into Th2 immune activation, driving itch, mast‑cell priming, and the atopic inflammatory cascade.
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Thyroid dysfunction
MedicalConditionCondition affecting hair growth cycles, worth investigating when experiencing unexplained hair changes.
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Thyroid hormone
ChemicalSubstanceMetabolic hormones produced by the thyroid gland, with imbalances affecting hair growth cycles and skin quality.
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Tight Junction
AnatomicalStructureTight junctions are intercellular protein complexes that form continuous belt-like seals at cell–cell contacts in epithelial tissues.
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Tirzepatide
DrugDual GLP-1/GIP receptor agonist (Mounjaro/Zepbound) providing powerful appetite suppression through weekly subcutaneous injection.
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Tissue regeneration
BiologicalProcessRepair outcomes range from true regeneration to fibrosis, determined by TGFβ isoform balance, macrophage M1→M2 transition, and inflammageing-related suppression of progenitor cells.
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Topical steroid withdrawal
MedicalConditionA drug‑related dermatosis in which prolonged topical steroid use leads to burning, erythema, and severe barrier dysfunction after withdrawal, often misdiagnosed as worsening eczema.
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Transepidermal water loss
BiologicalProcessTransepidermal water loss (TEWL) is the passive diffusion of water vapour through the epidermis and stratum corneum to the skin surface, where it evaporates into the surrounding air.
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Transforming growth factor beta
ProteinTGF-β is a pleiotropic cytokine and the master regulator of wound healing, fibrosis, and extracellular matrix remodelling in skin.
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Tumour necrosis factor
ProteinTNF is a pro-inflammatory cytokine produced by macrophages, adipocytes, and T-cells that acts through NF-κB to amplify and sustain inflammatory signalling.
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Type 2 diabetes
MedicalConditionMetabolic condition characterised by insulin resistance and elevated blood glucose, for which Mounjaro is an approved treatment.