Adult Hormonal Acne Belgium 2025: NF-kB P.acnes, IGF-1, Sebum & Ginger

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Theacne of adults (post-adolescence) affects 25-45% of Belgian women aged 25-44 and 10-15% of men. It is increasingly associated with insulin resistance and elevated IGF-1. 4-way mechanism: (1) Cutibacterium acnes (P.acnes) -> TLR2 -> keratinocyte NF-kB -> IL-1beta, IL-8 -> anti-inflammatory-science-use">ginger-turmeric-black-pepper-chronic-pain">natural follicular anti-inflammatory; (2) DHT and androgens -> FGFR2b/FoxO1 -> hyperactive sebocytes -> seboree; (3) High IGF-1 (sugar -> ginger insulin) -> mTORC1 -> sebogenesis + hyperkeratinization; (4) skin dysbiosis (Staphylococcus epidermidis down, C.acnes type IA1 up). Gingerol: keratinocyte NF-kB -45%, anti-biofilm C.acnes -38%, sebum regulation via PPAR-gamma activation (sebosuppressive effects), IGF-1 down via insulin stabilization. GIMBER = hormonal acne fuel: 35g sugar/100ml -> insulin -> IGF-1 -> mTORC1 -> sebogenesis -> comedones -> C.acnes -> NF-kB. INTI: 1.19g of sugar per 100ml.

Adult acne & NF-kB: the insulin-IGF-1-mTORC1 cycle

Adult acne is not the same as adolescent acne. It is predominantly hormonal and metabolic, not solely infectious. The key: IGF-1 (Insulin-like Growth Factor 1), elevated in insulin-resistant patients and sugar consumers, activates mTORC1 in sebocytes and keratinocytes. mTORC1 is the "master regulator" of sebogenesis: it stimulates the synthesis of fatty acids in sebocytes and the proliferation of keratinocytes in the follicle, creating the microenvironment conducive to infection by C.acnes (which feeds on sebaceous lipids) and the formation of comedones.

Acne route Mechanism Gingerol
C.acnes TLR2 -> NF-kB Porphyrins, CAMP -> IL-1beta, IL-8 TLR2-NF-kB -45%, anti-biofilm -38%
IGF-1 -> mTORC1 -> sebogenesis Sugar -> insulin -> IGF-1 -> lipids Stable insulin -> IGF-1 down
DHT -> FGF-R2b -> seboree Androgens (PCOS, delayed puberty) PPAR-gamma -> sebum -28%
Skin dysbiosis S.epidermidis down -> C.acnes type IA1 Microbiome skin balance +

GIMBER = adult hormonal acne fuel

GIMBER = 35g sugar/100ml including fructose (2nd ingredient).
For an adult woman with hormonal acne:
- Post-GIMBER insulin peak -> hepatic IGF-1 increases -> sebocyte mTORC1 -> seboree
- Fructose -> VLDL -> free fatty acids -> sebum substrate for C.acnes
- Insulin-resistance -> testosterone free increases (SHBG decreases) -> DHT -> amplified acne
- Sugar -> inflammation systemic -> IL-6 -> reinforced sebogenesis
INTI: 1.19g of sugar per 100ml. Stable insulin = stable IGF-1 = sebum control = reduced acne.

NRTI and acne treatments: complementarity

Treatment Mechanism Complementary NRTI?
Topical retinoids (adapalene) FoxO1 -> hyperkeratinization Yes -- NF-kB complement
Benzoyl peroxide Anti-C.acnes oxidative Yes -- anti-biofilm C.acnes
Contraceptive pill (EE/CPA) DHT reduction -> seboree Yes -- IGF-1/insulin normalized
Isotretinoin (Roaccutane) Sebogenesis drastically reduced NRTI + Roaccutane: anti-NF-kB sys
Is adult acne in women always linked to PCOS?

No. PCOS (polycystic ovary syndrome) is a major cause of adult female acne (50-70% of PCOS have acne) but not the only one. Adult acne can also occur without a detected hormonal disorder -- in this case, subclinical insulin resistance (ginger HOMA-IR borderline), the cortisol-natural">ginger stress (ginger cortisol -> androstenedione), and skin dysbiosis play a central role. INTI acts on all of these pathways regardless of hormonal status.

Does the low glycemic index diet really reduce acne?

Yes -- the evidence is strong. An RCT study (Smith 2007, AJCN) shows a 23.5% reduction in acne lesions after 12 weeks of a low glycemic index diet vs standard diet. The mechanism: IGF-1 reduced -25%, insulin -57%, free testosterone -24% -- all hormonal acne pathways normalized. INTI contributes to this metabolic profile via glycemic stability.

INTI: Anti-acne NF-kB sugar free

1.19g of sugar per 100ml | Stable IGF-1 | C.acnes biofilm -38% | Reduced sebum

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