| | | Azelaic acid | Hyaluronic acid | Polyglutamic acid | Salicylic Acid | Tranexamic acid | AHA (glycolic acid, lactic acid, etc.) | Bakuchiol | Beta-glucan | Caffeine | Plant-based collagen | Derivatives of Vitamin C | Dihydroxyacetone (DHA) | Natural Moisturizing Factors (NMF) | Niacinamide | PHA (gluconolactone) | Retinoids | Squalane | Vitamin B12 |
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| | Serum Typology | Mattifying serum (L35) | Hydrating Serum (A31) | Plumping Serum (A32) | Targeted blemish serum (L61) | Serum for dark spots and loss of firmness (A33) | Exfoliating Serum (L63) | Nighttime Blemish Serum (L62) | Soothing serum with 9 ingredients (D31) | Under-Eye Dark Circles and Puffiness Serum (L33) | Wrinkle and Firmness Serum (A34) | Radiance Serum (L32) | Progressive self-tanning serum (L31) | Bi-Phase Repair Serum (C30) | Unifying Serum (L36) | Anti-Marks Serum (L64) | Serum for Wrinkles & Fine Lines (A61) | Nourishing Serum (L34) | After-sun serum (L30) |
| Azelaic acid | Mattifying serum (L35) | / | (1) Azelaic acid and (2) Hyaluronic acid | (1) Polyglutamic Acid and (2) Azelaic Acid | (1) Azelaic acid and (2) Salicylic acid applied topically / Only in the evening | Compatible / No order of preference | (1) AHA and (2) Azelaic acid / For evening use only | (1) Azelaic acid and (2) Bakuchiol | (1) Beta-glucan and (2) Azelaic acid | (1) Caffeine around the periorbital area and (2) Azelaic acid applied while avoiding that region | Compatible / No order of preference | (1) Azelaic acid and (2) Vitamin C derivatives | (1) Azelaic acid and (2) DHA / Only in the evening | (1) Azelaic acid and (2) FNH | (1) Niacinamide and (2) Azelaic acid | (1) Azelaic acid and (2) PHA applied topically / Evening use only (1) Azelaic acid and (2) PHA applied topically | (1) Azelaic acid and (2) Retinoids / Only at night | (1) Azelaic acid and (2) Squalane | Compatible / No order of preference |
| Hyaluronic acid | Hydrating Serum (A31) | (1) Azelaic acid and (2) Hyaluronic acid | / | Compatible / No order of preference | (1) Hyaluronic acid and (2) Salicylic acid applied topically / Use only at night | (1) Hyaluronic acid and (2) Tranexamic acid | (1) AHAs and (2) Hyaluronic Acid / Only in the evening | (1) Hyaluronic Acid and (2) Bakuchiol | (1) Beta-glucan and (2) Hyaluronic acid | (1) Caffeine around the eyes and (2) Hyaluronic acid while avoiding the area | (1) Plant-based Collagen and (2) Hyaluronic Acid | (1) Hyaluronic acid and (2) Vitamin C derivatives | (1) Hyaluronic Acid and (2) DHA / Only in the evening | (1) Hyaluronic acid and (2) FNH | (1) Niacinamide and (2) Hyaluronic Acid | (1) Hyaluronic Acid and (2) Topical PHA | (1) Hyaluronic Acid and (2) Retinoids / Use Exclusively at Night | (1) Hyaluronic Acid and (2) Squalane | (1) Vitamin B12 and (2) Hyaluronic Acid |
| Polyglutamic acid | Plumping Serum (A32) | (1) Polyglutamic Acid and (2) Azelaic Acid | Compatible / No order of preference | / | (1) Polyglutamic acid and (2) Salicylic acid for topical use / Apply only at night | (1) Polyglutamic Acid and (2) Tranexamic Acid | (1) Polyglutamic Acid and (2) AHA / Use Only at Night | (1) Polyglutamic Acid and (2) Bakuchiol | (1) Polyglutamic Acid and (2) Beta-Glucan | (1) Caffeine around the eyes, and (2) Polyglutamic acid avoiding the area | (1) Polyglutamic Acid and (2) Plant-Based Collagen | (1) Polyglutamic Acid and (2) Vitamin C Derivatives | (1) Polyglutamic Acid and (2) DHA / Only at Night | (1) Polyglutamic Acid and (2) HNF | (1) Polyglutamic Acid and (2) Niacinamide | (1) Polyglutamic acid and (2) PHA on site | (1) Polyglutamic Acid and (2) Retinoids / Use Only at Night | (1) Polyglutamic Acid and (2) Squalane | (1) Polyglutamic acid and (2) Vitamin B12 |
| Salicylic Acid | Targeted blemish serum (L61) | (1) Azelaic acid and (2) Salicylic acid applied topically / Only in the evening | (1) Hyaluronic acid and (2) Salicylic acid applied topically / Use only at night | (1) Polyglutamic acid and (2) Salicylic acid for topical use / Apply only at night | / | (1) Tranexamic acid and (2) Salicylic acid topically / Only at night | Use on different days / Only in the evening | (1) Bakuchiol and (2) Topical Salicylic Acid | (1) Beta-glucan and (2) Salicylic acid applied topically / Only in the evening | For local application / Evening only | (1) Plant-based collagen and (2) Salicylic acid applied locally / Use only in the evening | (1) Derivatives of Vitamin C and (2) Topical Salicylic Acid / Only at Night | Counterproductive / Use on different days | (1) NHF and (2) Topical Salicylic Acid / Only in the evening | (1) Niacinamide and (2) Salicylic Acid for Local Application / Only in the Evening | Compatible / No order of preference / Applied locally | (1) Retinoids and (2) Salicylic Acid for topical use / Only in the evening | (1) Squalane and (2) Salicylic Acid applied topically / Only use in the evening | (1) Vitamin B12 and (2) Topical Salicylic Acid / Use only at night |
| Tranexamic acid | Serum for dark spots and loss of firmness (A33) | Compatible / No order of preference | (1) Hyaluronic acid and (2) Tranexamic acid | (1) Polyglutamic Acid and (2) Tranexamic Acid | (1) Tranexamic acid and (2) Salicylic acid topically / Only at night | / | (1) AHA and (2) Tranexamic Acid / For evening use only | (1) Tranexamic Acid and (2) Bakuchiol | Compatible / No order of preference | (1) Caffeine around the eyes and (2) Tranexamic acid while avoiding the area | Compatible / No order of preference | (1) Tranexamic acid and (2) Vitamin C derivatives | (1) Tranexamic acid and (2) DHA / Only at night | (1) Tranexamic Acid and (2) FNH | (1) Niacinamide and (2) Tranexamic Acid | (1) Tranexamic acid and (2) topical PHA | (1) Tranexamic Acid and (2) Retinoids / Only in the Evening | (1) Tranexamic Acid and (2) Squalane | Compatible / No order of preference |
| AHA (glycolic acid, lactic acid, etc.) | Exfoliating Serum (L63) | (1) AHA and (2) Azelaic acid / For evening use only | (1) AHAs and (2) Hyaluronic Acid / Only in the evening | (1) Polyglutamic Acid and (2) AHA / Use Only at Night | Use on different days / Only in the evening | (1) AHA and (2) Tranexamic Acid / For evening use only | / | (1) AHA and (2) Bakuchiol / Use only at night | (1) AHAs and (2) Beta-glucan / Use only at night | (1) Caffeine around the eyes and (2) AHA avoiding the area / Only at night | (1) AHA and (2) Plant-Based Collagen / Only in the Evening | (1) AHAs and (2) Vitamin C Derivatives / For evening use only | Counterproductive / Use on different days | (1) AHA and (2) PHN / Only in the evening | (1) Niacinamide and (2) AHA / Only in the evening | (1) AHA and (2) PHA applied topically / Use only at night | Alternate every other night / Test beforehand / Only in the evening | (1) AHA and (2) Squalane / For use in the evening only | (1) AHA and (2) Vitamin B12 / Only in the evening |
| Bakuchiol | Nighttime Blemish Serum (L62) | (1) Azelaic acid and (2) Bakuchiol | (1) Hyaluronic Acid and (2) Bakuchiol | (1) Polyglutamic Acid and (2) Bakuchiol | (1) Bakuchiol and (2) Topical Salicylic Acid | (1) Tranexamic Acid and (2) Bakuchiol | (1) AHA and (2) Bakuchiol / Use only at night | / | (1) Beta-glucan and (2) Bakuchiol | (1) Caffeine around the eyes and (2) Bakuchiol while avoiding the area | (1) Plant-Based Collagen and (2) Bakuchiol | (1) Vitamin C Derivatives and (2) Bakuchiol | Counterproductive / Use on different days | (1) FNH and (2) Bakuchiol | (1) Niacinamide and (2) Bakuchiol | (1) Bakuchiol and (2) PHA applied topically | Compatible / No preference order / Only in the evening | Compatible / No order of preference | (1) Vitamin B12 and (2) Bakuchiol |
| Beta-glucan | Soothing serum with 9 ingredients (D31) | (1) Beta-glucan and (2) Azelaic acid | (1) Beta-glucan and (2) Hyaluronic acid | (1) Polyglutamic Acid and (2) Beta-Glucan | (1) Beta-glucan and (2) Salicylic acid applied topically / Only in the evening | Compatible / No order of preference | (1) AHAs and (2) Beta-glucan / Use only at night | (1) Beta-glucan and (2) Bakuchiol | / | (1) Caffeine for under-eye areas and (2) Beta-glucan, avoiding the area | Compatible / No order of preference | (1) Beta-glucan and (2) Vitamin C Derivatives | (1) Beta-glucan and (2) DHA / Only in the evening | (1) Beta-glucan and (2) NHF | (1) Niacinamide and (2) Beta-glucan | (1) Beta-glucan and (2) Local PHA | (1) Beta-glucan and (2) Retinoids / Only at night | (1) Beta-glucan and (2) Squalane | Compatible / No order of preference |
| Caffeine | Under-Eye Dark Circles and Puffiness Serum (L33) | (1) Caffeine around the periorbital area and (2) Azelaic acid applied while avoiding that region | (1) Caffeine around the eyes and (2) Hyaluronic acid while avoiding the area | (1) Caffeine around the eyes, and (2) Polyglutamic acid avoiding the area | For local application / Evening only | (1) Caffeine around the eyes and (2) Tranexamic acid while avoiding the area | (1) Caffeine around the eyes and (2) AHA avoiding the area / Only at night | (1) Caffeine around the eyes and (2) Bakuchiol while avoiding the area | (1) Caffeine for under-eye areas and (2) Beta-glucan, avoiding the area | / | (1) Caffeine around the eyes and (2) plant-based collagen while avoiding the area | (1) Caffeine around the eyes and (2) Vitamin C derivatives while avoiding the area | (1) Caffeine around the eyes and (2) DHA avoiding the area / Only in the evening | (1) Caffeine around the eyes and (2) NFD while avoiding the area | (1) Caffeine around the eyes and (2) Niacinamide while avoiding the area | (1) Caffeine around the eyes and (2) PHA applied locally while avoiding the area | (1) Caffeine on the eye contour and (2) Retinoids avoiding the area / Only in the evening | (1) Caffeine around the eyes and (2) Squalane avoiding the area | (1) Caffeine around the eyes and (2) Vitamin B12 while avoiding the area |
| Plant-based collagen | Wrinkle and Firmness Serum (A34) | Compatible / No order of preference | (1) Plant-based Collagen and (2) Hyaluronic Acid | (1) Polyglutamic Acid and (2) Plant-Based Collagen | (1) Plant-based collagen and (2) Salicylic acid applied locally / Use only in the evening | Compatible / No order of preference | (1) AHA and (2) Plant-Based Collagen / Only in the Evening | (1) Plant-Based Collagen and (2) Bakuchiol | Compatible / No order of preference | (1) Caffeine around the eyes and (2) plant-based collagen while avoiding the area | / | Compatible / No order of preference | (1) Plant-based collagen and (2) DHA / Evening use only | (1) Plant-based collagen and (2) NHF | (1) Niacinamide and (2) Plant Collagen | (1) Plant-based collagen and (2) PHA locally | (1) Plant-Based Collagen and (2) Retinoids / Use Only at Night | (1) Plant-Based Collagen and (2) Squalane | Compatible / No order of preference |
| Derivatives of Vitamin C | Radiance Serum (L32) | (1) Azelaic acid and (2) Vitamin C derivatives | (1) Hyaluronic acid and (2) Vitamin C derivatives | (1) Polyglutamic Acid and (2) Vitamin C Derivatives | (1) Derivatives of Vitamin C and (2) Topical Salicylic Acid / Only at Night | (1) Tranexamic acid and (2) DHA / Only at night | (1) AHAs and (2) Vitamin C Derivatives / For evening use only | (1) Vitamin C Derivatives and (2) Bakuchiol | (1) Beta-glucan and (2) Vitamin C Derivatives | (1) Caffeine around the eyes and (2) Vitamin C derivatives while avoiding the area | Compatible / No order of preference | / | (1) Vitamin C Derivatives and (2) Dihydroxyacetone / Only in the Evening | (1) NHF and (2) Vitamin C Derivatives | (1) Niacinamide and (2) Vitamin C Derivatives | (1) Derivatives of Vitamin C and (2) Topical PHAs | (1) Vitamin C Derivatives and (2) Retinoids / Use Only at Night | (1) Vitamin C Derivatives and (2) Squalane | (1) Vitamin B12 and (2) Derivatives of Vitamin C |
| Dihydroxyacetone (DHA) | Progressive self-tanning serum (L31) | (1) Azelaic acid and (2) DHA / Only in the evening | (1) Hyaluronic Acid and (2) DHA / Only in the evening | (1) Polyglutamic Acid and (2) DHA / Only at Night | Counterproductive / Use on different days | (1) Tranexamic acid and (2) DHA / Only at night | Counterproductive / Use on different days | Counterproductive / Use on different days | (1) Beta-glucan and (2) DHA / Only in the evening | (1) Caffeine around the eyes and (2) DHA avoiding the area / Only in the evening | (1) Plant-based collagen and (2) DHA / Evening use only | (1) Vitamin C Derivatives and (2) Dihydroxyacetone / Only in the Evening | / | Counterproductive / Use on different days | (1) Niacinamide and (2) DHA / Use only at night | Counterproductive / Use on different days | Counterproductive / Use on different days | Counterproductive / Use on different days | (1) Vitamin B12 and (2) DHA / Only in the evening |
| Natural Moisturizing Factors (NMF) | Bi-Phase Repair Serum (C30) | (1) Azelaic acid and (2) FNH | (1) Hyaluronic acid and (2) FNH | (1) Polyglutamic Acid and (2) HNF | (1) NHF and (2) Topical Salicylic Acid / Only in the evening | (1) Tranexamic Acid and (2) FNH | (1) AHA and (2) PHN / Only in the evening | (1) FNH and (2) Bakuchiol | (1) Beta-glucan and (2) NHF | (1) Caffeine around the eyes and (2) NFD while avoiding the area | (1) Plant-based collagen and (2) NHF | (1) NHF and (2) Vitamin C Derivatives | Counterproductive / Use on different days | / | (1) Niacinamide and (2) FNH | (1) LCB and (2) PHA locally | (1) NHF and (2) Retinoids / Only in the evening | Compatible / No order of preference | (1) Vitamin B12 and (2) HNF |
| Niacinamide | Unifying Serum (L36) | (1) Niacinamide and (2) Azelaic acid | (1) Niacinamide and (2) Hyaluronic Acid | (1) Polyglutamic Acid and (2) Niacinamide | (1) Niacinamide and (2) Salicylic Acid for Local Application / Only in the Evening | (1) Niacinamide and (2) Tranexamic Acid | (1) Niacinamide and (2) AHA / Only in the evening | (1) Niacinamide and (2) Bakuchiol | (1) Niacinamide and (2) Beta-glucan | (1) Caffeine around the eyes and (2) Niacinamide while avoiding the area | (1) Niacinamide and (2) Plant Collagen | (1) Niacinamide and (2) Vitamin C Derivatives | (1) Niacinamide and (2) DHA / Use only at night | (1) Niacinamide and (2) FNH | / | (1) Niacinamide and (2) PHA for topical use | (1) Niacinamide and (2) Retinoids / Use only at night | (1) Niacinamide and (2) Squalane | (1) Niacinamide and (2) Vitamin B12 |
| PHA (gluconolactone) | Anti-Marks Serum (L64) | (1) Azelaic acid and (2) PHA topical application | (1) Hyaluronic Acid and (2) Topical PHA | (1) Polyglutamic acid and (2) PHA on site | Compatible / No order of preference / Applied locally | (1) Tranexamic acid and (2) topical PHA | (1) AHA and (2) PHA applied topically / Use only at night | (1) Bakuchiol and (2) PHA applied topically | (1) Beta-glucan and (2) Local PHA | (1) Caffeine around the eyes and (2) PHA applied locally while avoiding the area | (1) Plant-based collagen and (2) PHA locally | (1) Derivatives of Vitamin C and (2) Topical PHAs | Counterproductive / Use on different days | (1) LCB and (2) PHA locally | (1) Niacinamide and (2) PHA for topical use | / | (1) Retinoids and (2) PHA topically / Only in the evening | (1) Squalane and (2) PHA applied topically | (1) Vitamin B12 and (2) PHA applied locally |
| Retinoids | Serum for Wrinkles & Fine Lines (A61) | (1) Azelaic acid and (2) Retinoids / Only at night | (1) Hyaluronic Acid and (2) Retinoids / Use Exclusively at Night | (1) Polyglutamic Acid and (2) Retinoids / Use Only at Night | (1) Retinoids and (2) Salicylic Acid for topical use / Only in the evening | (1) Tranexamic Acid and (2) Retinoids / Only in the Evening | Alternate every other night / Test beforehand / Only in the evening | Compatible / No preference order / Only in the evening | (1) Beta-glucan and (2) Retinoids / Only at night | (1) Caffeine on the eye contour and (2) Retinoids avoiding the area / Only in the evening | (1) Plant-Based Collagen and (2) Retinoids / Use Only at Night | (1) Vitamin C Derivatives and (2) Retinoids / Use Only at Night | Counterproductive / Use on different days | (1) NHF and (2) Retinoids / Only in the evening | (1) Niacinamide and (2) Retinoids / Use only at night | (1) Retinoids and (2) PHA topically / Only in the evening | / | (1) Squalane and (2) Retinoids / Use only in the evening | (1) Vitamin B12 and (2) Retinoids / Only at night |
| Squalane | Nourishing Serum (L34) | (1) Azelaic acid and (2) Squalane | (1) Hyaluronic Acid and (2) Squalane | (1) Polyglutamic Acid and (2) Squalane | (1) Squalane and (2) Salicylic Acid applied topically / Only use in the evening | (1) Tranexamic Acid and (2) Squalane | (1) AHA and (2) Squalane / For use in the evening only | Compatible / No order of preference | (1) Beta-glucan and (2) Squalane | (1) Caffeine around the eyes and (2) Squalane avoiding the area | (1) Plant-Based Collagen and (2) Squalane | (1) Vitamin C Derivatives and (2) Squalane | Counterproductive / Use on different days | Compatible / No order of preference | (1) Niacinamide and (2) Squalane | (1) Squalane and (2) PHA applied topically | (1) Squalane and (2) Retinoids / Use only in the evening | / | (1) Vitamin B12 and (2) Squalane |
| Vitamin B12 | After-sun serum (L30) | Compatible / No order of preference | (1) Vitamin B12 and (2) Hyaluronic Acid | (1) Polyglutamic acid and (2) Vitamin B12 | (1) Vitamin B12 and (2) Topical Salicylic Acid / Use only at night | Compatible / No order of preference | (1) AHA and (2) Vitamin B12 / Only in the evening | (1) Vitamin B12 and (2) Bakuchiol | Compatible / No order of preference | (1) Caffeine around the eyes and (2) Vitamin B12 while avoiding the area | Compatible / No order of preference | (1) Vitamin B12 and (2) Derivatives of Vitamin C | (1) Vitamin B12 and (2) DHA / Only in the evening | (1) Vitamin B12 and (2) HNF | (1) Niacinamide and (2) Vitamin B12 | (1) Vitamin B12 and (2) PHA applied locally | (1) Vitamin B12 and (2) Retinoids / Only at night | (1) Vitamin B12 and (2) Squalane | / |