| ZO Skin Health Pigment Control Program Plus Hydroquinone | ZO Skin Health, Inc. | 2026-04-14 |
| Hydroquinone 4% | Bryant Ranch Prepack | 2026-03-17 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | PURETEK CORPORATION | 2026-01-26 |
| Hydroquinone 4% | Nivagen Pharmaceuticals, Inc. | 2026-01-20 |
| HYDROQUINONE, TITANIUM DIOXIDE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | Universal Packaging Systems, Inc. (DBA Paklab) | PURETEK CORPORATION | 2025-11-13 |
| hydroquinone | Marlex Pharmaceuticals, Inc. | 2025-11-13 |
| HYDROQUINONE, TITANIUM DIOXIDE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | Swiss American CDMO, LLC | G. S. Cosmeceutical USA, Inc. | PURETEK CORPORATION | Universal Packaging Systems, Inc. (DBA Paklab) | 2025-11-13 |
| HYDROQUINONE, TITANIUM DIOXIDE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | Swiss American CDMO, LLC | G. S. Cosmeceutical USA, Inc. | PURETEK CORPORATION | 2025-11-05 |
| Hydroquinone, Titanium Dioxide, and Zinc Oxide | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | Swiss American CDMO, LLC | G. S. Cosmeceutical USA, Inc. | PURETEK CORPORATION | 2025-11-04 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | 2025-10-23 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Swiss American CDMO, LLC | G. S. Cosmeceutical USA, Inc. | Bay Cities Container Corporation | 2025-10-23 |
| Hydroquinone, Homosalate, Octisalate, Zinc Oxide | Obagi Cosmeceuticals LLC | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | Bay Cities Container Corporation | 2025-10-23 |
| Hydroquinone, Homosalate, Octisalate, Zinc Oxide | Obagi Cosmeceuticals LLC | Swiss-American CDMO, LLC | G.S.COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2025-10-23 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, ZINC OXIDE | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | Universal Packaging Systems, Inc. (DBA Paklab) | PURETEK CORPORATION | 2025-10-21 |
| Hydroquinone | Vivant Pharmaceuticals, LLC | 2025-07-24 |
| Hydroquinone, Homosalate, Octisalate, and Zinc Oxide | OBAGI COSMECEUTICAL LLC | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Swiss-American CDMO, LLC | 2025-03-14 |
| Hydroquinone, Octisalate and Zinc Oxide | OBAGI COSMECEUTICAL LLC | PURETEK CORPORATION | Swiss-American CDMO, LLC | G. S. Cosmeceutical USA, Inc. | 2025-03-14 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, and ZINC OXIDE | OBAGI COSMECEUTICAL LLC | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Swiss-American CDMO, LLC | 2025-03-14 |
| Hydroquinone, Homosalate, Octisalate, and Zinc Oxide | OBAGI COSMECEUTICAL LLC | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Swiss-American CDMO, LLC | 2025-03-14 |
| HYDROQUINONE | Obagi Cosmeceuticals LLC | G.S.COSMECEUTICAL USA, INC. | 2025-01-01 |
| HYDROQUINONE | Obagi Cosmeceuticals LLC | G.S.COSMECEUTICAL USA, INC. | PURETEK CORPORATION | 2025-01-01 |
| fluocinolone acetonide, hydroquinone, and tretinoin | Galderma Laboratories, L.P. | Hill Dermaceuticals, Inc. | G Production, Inc. | 2024-10-24 |
| HYDROQUINONE 4% | Akron Pharma Inc | 2024-09-25 |
| Hydroquinone | Medsource Pharmaceuticals | 2024-04-22 |
| HYDROQUINONE | Deseret Biologicals, Inc. | Apotheca Company | 2024-03-14 |
| HYDROQUINONE 4% | Acella Pharmaceuticals, LLC | 2024-01-15 |
| Hydroquinone 4% | SOHM, Inc. | 2023-06-05 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE AND ZINC OXIDE | Obagi Cosmeceuticals LLC | G. S. Cosmeceutical USA, Inc. | Swiss American CDMO, LLC | Universal Packaging Systems, Inc. (DBA Paklab) | PURETEK CORPORATION | 2023-01-26 |
| HYDROQUINONE, HOMOSALATE, OCTISALATE, AND ZINC OXIDE | Obagi Cosmeceuticals LLC | G. S. Cosmeceutical USA, Inc. | Universal Packaging Systems, Inc. (DBA Paklab) | Swiss American CDMO, LLC | PURETEK CORPORATION | 2023-01-26 |
| Hydroquinone | Dermavance Pharmaceuticals | Medical Products Laboratories, Inc. | 2023-01-12 |
| Hydroquinone | Westminster Pharmaceuticals, LLC | 2022-12-14 |
| Hydroquinone | O Skin Care LLC | 2022-06-05 |
| HYDROQUINONE 4% | NuCare Pharmaceuticals,Inc. | 2022-06-02 |
| ZO Skin Health Pigment Control Creme Hydroquinone | ZO Skin Health, Inc. | 2022-04-25 |
| ZO Skin Health Pigment Control Plus Blending Creme Hydroquinone | ZO Skin Health, Inc. | 2022-04-25 |
| ZO Skin Health Pigment Control Plus Blending Creme Hydroquinone | ZO Skin Health, Inc. | 2022-04-22 |
| ZO Skin Health Pigment Control Creme Hydroquinone | ZO Skin Health, Inc. | 2022-04-22 |
| ZO Skin Health Pigment Control plus Brightening Creme Hydroquinone plus Vitamin C | ZO Skin Health, Inc. | 2022-04-21 |
| Hydroquinone | Bi-Coastal Pharma International LLC | 2022-01-18 |
| Hydroquinone, Tretinoin | Pella Pharmaceuticals Co. Ltd | 2021-12-01 |
| Hydroquinone cream | APNAR PHARMA LP | InvaDerm Corporation | 2021-10-21 |
| HYDROQUINONE | Noon Aesthetics M.R. Ltd | NOON Aesthetics M.R Ltd | 2021-04-12 |
| Hydroquinone | Axia Medical Solutions, LLC | 2021-02-19 |
| Hydroquinone | Axia Medical Solutions, LLC | 2021-02-19 |
| 141016 HYDROCORTISONE 0.5% / HYDROQUINONE 4% / TRETINOIN 0.025% | Sincerus Florida, LLC | 2020-07-02 |
| 141011 HYDROQUINONE 6% | Sincerus Florida, LLC | 2020-07-02 |
| 141030 HYDROQUINONE 8% | Sincerus Florida, LLC | 2020-07-02 |
| 141060 HYDROCORTISONE 0.5% / HYDROQUINONE 4% / TRETINOIN 0.025% | Sincerus Florida, LLC | 2020-07-02 |
| 141061 HYDROCORTISONE 0.5% / HYDROQUINONE 8% / TRETINOIN 0.025% | Sincerus Florida, LLC | 2020-07-02 |
| 141017 HYDROCORTISONE 0.5% / HYDROQUINONE 6% / TRETINOIN 0.025% | Sincerus Florida, LLC | 2020-07-02 |
| 141055 HYDROQUINONE 6% | Sincerus Florida, LLC | 2020-07-02 |
| 141010 HYDROQUINONE 4% | Sincerus Florida, LLC | 2020-07-02 |
| 141067 HYDROQUINONE 8% | Sincerus Florida, LLC | 2020-07-02 |
| HYDROQUINONE | Obagi Cosmeceuticals LLC | G.S. COSMECEUTICAL USA, INC. | PURETEK CORPORATION | 2020-06-02 |
| HYDROQUINONE | Obagi Cosmeceuticals LLC | VALEANT PHARMACEUTICALS NORTH AMERICA LLC | G.S. COSMECEUTICAL USA, INC. | PURETEK CORPORATION | 2020-06-01 |
| HYDROQUINONE | Syntenza Pharmaceuticals LLC | 2020-05-06 |
| Hydroquinone | Genomma Lab USA | 2020-04-22 |
| Hydroquinone | Vi Medical Products Inc. | VEGE-KURL, INC | 2020-02-14 |
| HYDROQUINONE | Hawknad Manufacturing Industries | EMS Acquisition Group | 2019-12-18 |
| HYDROQUINONE | Hawknad Manufacturing Industries | EMS Acquisition Group | 2019-12-18 |
| HYDROQUINONE | Hawknad Manufacturing Industries, Inc. | EMS Acquisition Group | 2019-12-18 |
| Hydroquinone, Octinoxate, and Zinc Oxide | Obagi Cosmeceuticals LLC | MILBAR LABORATORIES | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-12-04 |
| HYDROQUINONE, OCTINOXATE AND ZINC OXIDE | Obagi Cosmeceuticals LLC | PURETEK CORPORATION | Swiss-American CDMO, LLC | Bay Cities Container Corporation | 2019-12-04 |
| Hydroquinone, Octinoxate, and Zinc Oxide | Obagi Cosmeceuticals LLC | MILBAR LABORATORIES | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-12-04 |
| Hydroquinone, Octinoxate,and Zinc Oxide | Obagi Cosmeceuticals LLC | Bay Cities Container Corporation | PURETEK CORPORATION | G.S. COSMECEUTICAL USA, INC. | 2019-11-14 |
| HYDROQUINONE | Obagi Cosmeceuticals LLC | G.S. COSMECEUTICAL USA, INC. | Bay Cities Container Corporation | 2019-11-13 |
| HYDROQUINONE | Hawknad Manufacturing Industries | EMS Acquisition Corp | 2019-10-22 |
| hydroquinone cream | Peer Pharm Ltd | 2019-09-06 |
| hydroquinone cream | Peer Pharm Ltd | 2019-09-05 |
| hydroquinone cream | Peer Pharm Ltd | 2019-09-05 |
| hydroquinone cream | Peer Pharm Ltd | 2019-09-05 |
| HYDROQUINONE | Vi Medical Products Inc. | Vi Medical Products Inc. INC | MICRO CONNECTION ENTERPRISES INC | 2019-08-07 |
| HYDROCORTISONE 0.5% / HYDROQUINONE 6% / TRETINOIN 0.05% | Sincerus Florida, LLC | 2019-05-22 |
| HYDROCORTISONE 1% / HYDROQUINONE 8% / TRETINOIN 0.05% | Sincerus Florida, LLC | 2019-05-21 |
| DESOXIMETASONE 0.05% / HYDROQUINONE 6% / TRETINOIN 0.05% | Sincerus Florida, LLC | 2019-05-20 |
| HYDROQUINONE 4% / TRETINOIN 0.025% / TRIAMCINOLONE ACETONIDE 0.025% | Sincerus Florida, LLC | Sinceus Florida, LLC | 2019-05-20 |
| HYALURONIC ACID SODIUM SALT 1% / HYDROQUINONE 6% | Sincerus Florida, LLC | 2019-05-20 |
| HYDROQUINONE 5% / TRETINOIN 0.025% / TRIAMCINOLONE ACETONIDE 0.025% | Sincerus Florida, LLC | 2019-05-20 |
| HYDROQUINONE 6% /TRETINOIN 0.05% | Sincerus Florida, LLC | 2019-05-20 |
| HYDROQUINONE 4% / TRETINOIN 0.025% | Sincerus Florida, LLC | 2019-05-20 |