Error message
- Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2246 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
- Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
- Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
- Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
- Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
- Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
Novel Synthetic Oligopeptide Formulation Offers Nonirritating Cosmetic Alternative for the Treatment of Melasma
Sadick NS, Palmisano D

Skin hyperpigmentation most commonly is caused by melasma, a cutaneous disorder associated with an overproduction of melanin by the tyrosinase enzyme. There currently are skin-lightening agents that areboth effective and cytotoxic, or slightly effective and nontoxic. The agent most commonly prescribed forthe treatment of hyperpigmentation is hydroquinone (HQ), a hydroxyphenolic compound that inhibits melanin production by inhibiting tyrosinase. In addition to topical agents, in-office aesthetic procedures `such as chemical peeling, lasers, and dermabrasion are used for the treatment of hyperpigmentation.These nontopical treatment modalities carry unpredictable adverse reactions. Lumixyl, a novel synthetic oligopeptide-containing formulation that inhibits both mushroom and human tyrosinase enzymes, has been shown to have more efficacy than HQ at similar concentrations without cytotoxicity. In-use clinical safety studies have shown a low irritation profile with no visible signs of irritation or allergic reaction and good tolerability. Studies and results suggest Lumixyl can be a nonirritating and useful, physiciandispensed cosmetic alternative for the treatment of melasma.