id	keyword
american_scientific_journal-5139	skin
american_scientific_journal-5139	extract
american_scientific_journal-5139	hydration
american_scientific_journal-5139	coffee
american_scientific_journal-5139	test
american_scientific_journal-5139	acid
american_scientific_journal-5139	research
american_scientific_journal-5139	centella
american_scientific_journal-5139	asiatica
american_scientific_journal-5139	levels
american_scientific_journal-5139	treatment